This document provides instructions for students taking the Grade 12 Life Sciences exam. It consists of three sections with a total of 150 marks over 21⁄2 hours. Students must answer all questions, writing their answers in the answer book and numbering them correctly. Diagrams should be drawn in pencil and labeled in ink. Calculators, protractors, and compasses may be used.
This document contains instructions for a 150 mark, 2.5 hour Life Sciences exam for Grade 12. It outlines:
- The number of questions and pages in the paper
- Instructions that students must answer all questions, write answers in the answer book, and number them correctly
- Information on drawings, diagrams, and materials allowed
- The exam contains 3 sections: Section A with 7 multiple choice and descriptive questions worth 50 marks, Section B with 4 extended response questions worth 30 marks, and Section C with 1 extended response question worth 30 marks.
This document provides the memorandum for marking Life Sciences Paper 1 from November 2010 for the National Senior Certificate in South Africa. It outlines 20 principles for marking, including how to allocate marks for partial or incorrect answers. The memorandum then provides the answers and marking schemes for questions in Sections A, B and C of the paper. It gives the correct responses and number of marks awarded for each answer line or part. In total 150 marks were available for the paper.
This document provides instructions for a Life Sciences exam consisting of 17 pages. It outlines that students must answer all questions, writing answers in the answer book and numbering them correctly. Diagrams should be drawn in pencil with labels in ink. Calculators and other equipment may be used. Students should write neatly and legibly. The exam is worth 150 marks and must be completed in 2.5 hours.
This memorandum provides answers and guidance for grading a Life Sciences exam consisting of 12 pages. It includes answers to multiple choice questions, short answer questions, and longer essay questions on topics relating to human reproduction, genetics, and biotechnology. Scoring rubrics are provided for questions involving diagrams, graphs, and experimental designs. The memorandum also notes common student errors to avoid for certain questions.
This 10-page memorandum provides marking guidelines for a Life Sciences P1 exam consisting of 150 marks and taken by full-time candidates in February/March 2013. It outlines 20 principles related to marking, including how to mark answers that provide more or less information than required or have incorrect sequencing. The memorandum also provides answer keys and mark allocations for 4 sections worth a total of 150 marks. Section A covers multiple choice, terminology, and genetics inheritance questions. Section B addresses DNA structure, sex-linked inheritance, protein synthesis, and meiosis. Section C involves human evolution topics and a graphing activity. Section D covers genetics principles like phenotypes and genotypes.
This 10-page memorandum provides guidance for grading South African Grade 12 Life Sciences students' answers. It covers Sections A, B, and C, with Section A including multiple-choice and matching questions on topics like meiosis, genetics, and reproduction. Section B involves labelling diagrams and short questions on subjects like the male reproductive system and the menstrual cycle. Section C consists of longer essay questions on genetics, forensics, and genetically modified organisms.
This document provides instructions for a Life Sciences exam consisting of 15 pages with 150 marks over 2.5 hours. It instructs students to answer all questions, write answers in the answer book, number answers correctly, and do all drawings in pencil with labels in ink. Diagrams are not necessarily to scale. Students must use a non-programmable calculator, protractor, and compass where needed. The exam consists of two sections. Section A contains multiple choice, matching, and short answer questions. Section B involves labeling diagrams and short answer questions related to DNA, RNA, protein synthesis, and meiosis.
This document provides instructions for a Life Sciences exam that will take place over 150 minutes. It consists of 15 pages and covers topics related to human anatomy and genetics. The exam is divided into 3 sections. Section A contains multiple choice and short answer questions. Section B focuses on human reproduction and inheritance. Section C addresses genetics concepts like inheritance patterns, genetic crosses and co-dominance. Students are instructed to answer all questions, show their work, and label diagrams clearly. Calculators and drawing tools are permitted.
This document contains instructions for a 150 mark, 2.5 hour Life Sciences exam for Grade 12. It outlines:
- The number of questions and pages in the paper
- Instructions that students must answer all questions, write answers in the answer book, and number them correctly
- Information on drawings, diagrams, and materials allowed
- The exam contains 3 sections: Section A with 7 multiple choice and descriptive questions worth 50 marks, Section B with 4 extended response questions worth 30 marks, and Section C with 1 extended response question worth 30 marks.
This document provides the memorandum for marking Life Sciences Paper 1 from November 2010 for the National Senior Certificate in South Africa. It outlines 20 principles for marking, including how to allocate marks for partial or incorrect answers. The memorandum then provides the answers and marking schemes for questions in Sections A, B and C of the paper. It gives the correct responses and number of marks awarded for each answer line or part. In total 150 marks were available for the paper.
This document provides instructions for a Life Sciences exam consisting of 17 pages. It outlines that students must answer all questions, writing answers in the answer book and numbering them correctly. Diagrams should be drawn in pencil with labels in ink. Calculators and other equipment may be used. Students should write neatly and legibly. The exam is worth 150 marks and must be completed in 2.5 hours.
This memorandum provides answers and guidance for grading a Life Sciences exam consisting of 12 pages. It includes answers to multiple choice questions, short answer questions, and longer essay questions on topics relating to human reproduction, genetics, and biotechnology. Scoring rubrics are provided for questions involving diagrams, graphs, and experimental designs. The memorandum also notes common student errors to avoid for certain questions.
This 10-page memorandum provides marking guidelines for a Life Sciences P1 exam consisting of 150 marks and taken by full-time candidates in February/March 2013. It outlines 20 principles related to marking, including how to mark answers that provide more or less information than required or have incorrect sequencing. The memorandum also provides answer keys and mark allocations for 4 sections worth a total of 150 marks. Section A covers multiple choice, terminology, and genetics inheritance questions. Section B addresses DNA structure, sex-linked inheritance, protein synthesis, and meiosis. Section C involves human evolution topics and a graphing activity. Section D covers genetics principles like phenotypes and genotypes.
This 10-page memorandum provides guidance for grading South African Grade 12 Life Sciences students' answers. It covers Sections A, B, and C, with Section A including multiple-choice and matching questions on topics like meiosis, genetics, and reproduction. Section B involves labelling diagrams and short questions on subjects like the male reproductive system and the menstrual cycle. Section C consists of longer essay questions on genetics, forensics, and genetically modified organisms.
This document provides instructions for a Life Sciences exam consisting of 15 pages with 150 marks over 2.5 hours. It instructs students to answer all questions, write answers in the answer book, number answers correctly, and do all drawings in pencil with labels in ink. Diagrams are not necessarily to scale. Students must use a non-programmable calculator, protractor, and compass where needed. The exam consists of two sections. Section A contains multiple choice, matching, and short answer questions. Section B involves labeling diagrams and short answer questions related to DNA, RNA, protein synthesis, and meiosis.
This document provides instructions for a Life Sciences exam that will take place over 150 minutes. It consists of 15 pages and covers topics related to human anatomy and genetics. The exam is divided into 3 sections. Section A contains multiple choice and short answer questions. Section B focuses on human reproduction and inheritance. Section C addresses genetics concepts like inheritance patterns, genetic crosses and co-dominance. Students are instructed to answer all questions, show their work, and label diagrams clearly. Calculators and drawing tools are permitted.
This memorandum provides marking guidelines for Life Sciences Paper 2 for the February/March 2013 examination in South Africa. It consists of 9 pages outlining the principles for marking, answers to questions in Sections A, B and C, and allocation of marks. The memorandum addresses topics related to human reproduction, genetics, ecosystems, population ecology, and endocrine system regulation.
This document is a 10 page memorandum for a Life Sciences exam consisting of 4 sections and 15 questions. It provides the answers and explanations for each question, along with the number of marks allocated to each part. The memorandum also includes rubrics for marking diagrams and explanations. In total, there are 150 marks available for the exam.
This document is a 16-page Life Sciences question paper for Grade 12 from the February/March 2013 National Senior Certificate exams in South Africa. It consists of 4 sections with multiple choice, short answer, and longer answer questions testing knowledge of topics like genetics, evolution, and human origins. The instructions state that students have 2.5 hours to complete the paper and must answer all questions, showing their work in the provided answer book.
This document provides principles for marking the Life Sciences memorandum for the 2011 National Senior Certificate Grade 12 examination. It outlines 20 principles related to marking, including how to mark answers that provide extra information, partial processes, diagrams instead of descriptions, non-recognized abbreviations, and spelling errors. It also provides guidance on marking different language responses and adhering only to approved marking memoranda.
This document provides marking guidelines for grading Life Sciences papers in South Africa. It details 20 principles for markers to follow, such as marking the first three reasons given if more than three are provided. It also notes that abbreviations must be defined and that changes to memoranda require moderator approval. The document is signed, showing moderator consensus on the policies.
This document provides the marking guidelines for the 2008 Life Sciences P1 National Senior Certificate examination in South Africa. It consists of 13 pages outlining 20 key principles for marking the exam. Some of the main points include:
- Stop marking a question once the maximum marks have been reached.
- Credit all relevant parts of an answer, even if more information is provided than was asked.
- Accept answers if they are recognizable and in the correct sequence, even if spelling or language differs slightly from the guidelines.
- Credit diagrams, flow charts or tabulations if they provide the required information, even if not in the format specified.
- Be sensitive to alternative interpretations or explanations provided in answers.
This memorandum consists of 11 pages and provides answers and marking schemes for questions in Life Sciences P2 from February/March 2010. Section A contains multiple choice and short answer questions on topics such as evolution, classification of organisms, geological time periods, and human evolution. Section B involves longer answer questions on natural selection, inheritance of acquired characteristics, environmental issues, and river pollution. Section C contains questions on plant germination, data analysis, human evolution, and fisheries management. The memorandum provides detailed answers and point allocations for each question.
El documento presenta el programa de niveles de la Federación Colombiana de Gimnasia. Describe los tres segmentos principales (desarrollo, obligatorios y opcionales), los requisitos para avanzar entre los 10 niveles, así como las responsabilidades y derechos de los gimnastas. El objetivo es ofrecer oportunidades competitivas para gimnastas de diferentes habilidades y edades a través de un sistema progresivo.
This memorandum consists of 11 pages and provides grading guidelines for answering questions about Life Sciences. It includes 20 principles for marking answers, such as crediting parts of responses even if the whole process isn't described. The memorandum also provides the answers to sample questions on topics like human reproduction, genetics, ecology and the human nervous and endocrine systems.
This document is an exam for the International General Certificate of Secondary Education in mathematics. It consists of 12 printed pages containing 21 multiple choice and constructed response questions testing a variety of math skills. Questions cover topics like trigonometry, fractions, exponents, equations, coordinate geometry, and vectors. Students are instructed to show their work, use units where appropriate, and simplify expressions.
This document contains instructions for a Grade 12 Life Sciences exam. It consists of 17 pages and students have 2.5 hours to complete it. The exam contains multiple choice questions, terminology questions, matching questions and short answer questions testing knowledge of human anatomy and physiology, genetics, ecology and other topics. Students must answer all questions in the answer book provided and show all working where required. Diagrams should be drawn in pencil. Calculators and other aids are permitted.
This document provides the pinout diagrams and descriptions for Honda OBD1 ECU connectors for various 1992-1995 Civic, Integra, and Prelude models. It lists the pin numbers, names, descriptions, and wire colors for pins in Connectors A, B, and D. Connector A contains pins for fuel injectors, VTEC solenoid, oxygen sensor, and other components. Connector B includes pins for transmission control and climate control. Connector D has pins for sensors measuring knock, coolant temperature, intake air temperature, and other engine parameters.
This document discusses changes made by the Cambridge International Examinations (CIE) to some of their question papers for popular assessments. CIE now uses two similar but distinct variants of some question papers to provide more past examination material to students. The content and standards assessed remain the same between variants. Teachers should contact CIE for more information on these changes.
This document contains two variants of mark schemes for an IGCSE Physics exam. It provides the marking guidance for examiners to use when assessing student responses. The mark schemes show the requirements to achieve marks and make clear that alternative correct solutions should also be given marks. Any questions about the mark schemes should be directed to CIE's customer services team.
El documento proporciona instrucciones para el manejo del tacógrafo digital DTCO 1381. Explica los diferentes modos de funcionamiento, las tarjetas de tacógrafo y sus funciones, así como los procedimientos para realizar entradas manuales, descargar datos e imprimir documentos. También incluye información sobre las disposiciones legales y el mantenimiento del dispositivo.
National 5 History exam - 2023 (marking instructions)mrmarr
The document provides general marking principles for the National 5 History exam. It outlines 6 types of questions that may be asked and the marking criteria for each. It details the point structure for questions that ask candidates to describe, explain, make a judgement, evaluate evidence, compare sources, and assess how fully a source describes/explains something. For each question type, it provides the maximum marks, how marks will be allocated for knowledge points and developed points, and includes an example question and response.
JCB 535-67 TELESCOPIC HANDLER Service Repair Manual ALL:572775 Onwardsjksmnduiss
This is the Highly Detailed factory service repair manual for theJCB 535-67 TELESCOPIC HANDLER, this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic.JCB 535-67 TELESCOPIC HANDLER Service Repair Workshop Manual provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
Service Repair Manual Covers:
General
Hydraulics
Body and Framework
PlaceAce Control System
Servo Control System
Engine
Transmission
Axles
Brakes
Hydraulic Steering
Electrics
Service Tools
Index
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
NO waiting, Buy from responsible seller and get INSTANT DOWNLOAD, Without wasting your hard-owned money on uncertainty or surprise! All pages are is great to haveJCB 535-67 TELESCOPIC HANDLER Service Repair Workshop Manual.
Looking for some other Service Repair Manual,please check:
https://www.aservicemanualpdf.com/
Thanks for visiting!
8
Mitsubishi FB16KT Forklift Trucks (Controller) Service Repair Manual SN: EFB4...jkskemmdm
This is the Highly Detailed factory service repair manual for theMITSUBISHI FB16KT FORKLIFT TRUCKS (CONTROLLER), this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic.MITSUBISHI FB16KT FORKLIFT TRUCKS (CONTROLLER) Service Repair Workshop Manual provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
Service Repair Manual Covers:
Foreword
Main Controller
Outline
Controller Components
Logic Card Components
Controller Models
Operation Outline
Drive System
Hydraulic System
Fail-Safe System
Malfunction Detection
Setting
Self-Diagnosis
Other Functions
Display Unit
Inspection and Adjustment
Service Data
Tightening Torque
Troubleshooting for Control Circuits
General Information
Electrical System Diagram
Alarm List
Wiring Schematic
Motors
Motor Installation Positions
Specifications
Structures
Tightening of High-power Cable Terminals
Inspection of Brushes for Wear and Brush Replacement
Procedures and Suggestions for Removal and Installation
Procedures and Suggestions for Disassembly and Reassembly
Troubleshooting
Service Data
Checks and Repairs
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
NO waiting, Buy from responsible seller and get INSTANT DOWNLOAD, Without wasting your hard-owned money on uncertainty or surprise! All pages are is great to haveMITSUBISHI FB16KT FORKLIFT TRUCKS (CONTROLLER) Service Repair Workshop Manual.
Looking for some other Service Repair Manual,please check:
https://www.aservicemanualpdf.com/
Thanks for visiting!
8
JCB 531-T70 TELESCOPIC HANDLER Service Repair Manualjkseodlpled
This document provides tables that list the applicability of service manual topics to different JCB Loadall machine models. The tables cover sections on general information, routine maintenance, body/framework, electrics, hydraulics, transmission, and other systems. The tables indicate which topics apply to each machine model and variant. The purpose is to help technicians find the correct information for the specific machine being serviced.
The memorandum provides principles for marking Life Sciences papers in 2012. It details 20 marking principles, including crediting relevant parts of answers even if extra information is provided, marking the first few reasons or examples given, and being sensitive to answers stated differently but conveying the same meaning. The memorandum also addresses aspects like spelling, abbreviations, diagrams, flow charts, and language.
This document provides instructions for a Life Sciences exam consisting of 13 pages and 150 marks over 2.5 hours. It is divided into 3 sections. Section A contains multiple choice and matching questions about topics in evolution, genetics, human origins, and inheritance patterns. Section B asks students to represent genetic crosses, discuss advantages and disadvantages of genetic engineering, and interpret data on human height. Section C contains diagrams of skulls and asks students to identify species, compare evolutionary trends, and describe evidence for the African origin of humans.
This memorandum provides marking guidelines for Life Sciences Paper 2 for the February/March 2013 examination in South Africa. It consists of 9 pages outlining the principles for marking, answers to questions in Sections A, B and C, and allocation of marks. The memorandum addresses topics related to human reproduction, genetics, ecosystems, population ecology, and endocrine system regulation.
This document is a 10 page memorandum for a Life Sciences exam consisting of 4 sections and 15 questions. It provides the answers and explanations for each question, along with the number of marks allocated to each part. The memorandum also includes rubrics for marking diagrams and explanations. In total, there are 150 marks available for the exam.
This document is a 16-page Life Sciences question paper for Grade 12 from the February/March 2013 National Senior Certificate exams in South Africa. It consists of 4 sections with multiple choice, short answer, and longer answer questions testing knowledge of topics like genetics, evolution, and human origins. The instructions state that students have 2.5 hours to complete the paper and must answer all questions, showing their work in the provided answer book.
This document provides principles for marking the Life Sciences memorandum for the 2011 National Senior Certificate Grade 12 examination. It outlines 20 principles related to marking, including how to mark answers that provide extra information, partial processes, diagrams instead of descriptions, non-recognized abbreviations, and spelling errors. It also provides guidance on marking different language responses and adhering only to approved marking memoranda.
This document provides marking guidelines for grading Life Sciences papers in South Africa. It details 20 principles for markers to follow, such as marking the first three reasons given if more than three are provided. It also notes that abbreviations must be defined and that changes to memoranda require moderator approval. The document is signed, showing moderator consensus on the policies.
This document provides the marking guidelines for the 2008 Life Sciences P1 National Senior Certificate examination in South Africa. It consists of 13 pages outlining 20 key principles for marking the exam. Some of the main points include:
- Stop marking a question once the maximum marks have been reached.
- Credit all relevant parts of an answer, even if more information is provided than was asked.
- Accept answers if they are recognizable and in the correct sequence, even if spelling or language differs slightly from the guidelines.
- Credit diagrams, flow charts or tabulations if they provide the required information, even if not in the format specified.
- Be sensitive to alternative interpretations or explanations provided in answers.
This memorandum consists of 11 pages and provides answers and marking schemes for questions in Life Sciences P2 from February/March 2010. Section A contains multiple choice and short answer questions on topics such as evolution, classification of organisms, geological time periods, and human evolution. Section B involves longer answer questions on natural selection, inheritance of acquired characteristics, environmental issues, and river pollution. Section C contains questions on plant germination, data analysis, human evolution, and fisheries management. The memorandum provides detailed answers and point allocations for each question.
El documento presenta el programa de niveles de la Federación Colombiana de Gimnasia. Describe los tres segmentos principales (desarrollo, obligatorios y opcionales), los requisitos para avanzar entre los 10 niveles, así como las responsabilidades y derechos de los gimnastas. El objetivo es ofrecer oportunidades competitivas para gimnastas de diferentes habilidades y edades a través de un sistema progresivo.
This memorandum consists of 11 pages and provides grading guidelines for answering questions about Life Sciences. It includes 20 principles for marking answers, such as crediting parts of responses even if the whole process isn't described. The memorandum also provides the answers to sample questions on topics like human reproduction, genetics, ecology and the human nervous and endocrine systems.
This document is an exam for the International General Certificate of Secondary Education in mathematics. It consists of 12 printed pages containing 21 multiple choice and constructed response questions testing a variety of math skills. Questions cover topics like trigonometry, fractions, exponents, equations, coordinate geometry, and vectors. Students are instructed to show their work, use units where appropriate, and simplify expressions.
This document contains instructions for a Grade 12 Life Sciences exam. It consists of 17 pages and students have 2.5 hours to complete it. The exam contains multiple choice questions, terminology questions, matching questions and short answer questions testing knowledge of human anatomy and physiology, genetics, ecology and other topics. Students must answer all questions in the answer book provided and show all working where required. Diagrams should be drawn in pencil. Calculators and other aids are permitted.
This document provides the pinout diagrams and descriptions for Honda OBD1 ECU connectors for various 1992-1995 Civic, Integra, and Prelude models. It lists the pin numbers, names, descriptions, and wire colors for pins in Connectors A, B, and D. Connector A contains pins for fuel injectors, VTEC solenoid, oxygen sensor, and other components. Connector B includes pins for transmission control and climate control. Connector D has pins for sensors measuring knock, coolant temperature, intake air temperature, and other engine parameters.
This document discusses changes made by the Cambridge International Examinations (CIE) to some of their question papers for popular assessments. CIE now uses two similar but distinct variants of some question papers to provide more past examination material to students. The content and standards assessed remain the same between variants. Teachers should contact CIE for more information on these changes.
This document contains two variants of mark schemes for an IGCSE Physics exam. It provides the marking guidance for examiners to use when assessing student responses. The mark schemes show the requirements to achieve marks and make clear that alternative correct solutions should also be given marks. Any questions about the mark schemes should be directed to CIE's customer services team.
El documento proporciona instrucciones para el manejo del tacógrafo digital DTCO 1381. Explica los diferentes modos de funcionamiento, las tarjetas de tacógrafo y sus funciones, así como los procedimientos para realizar entradas manuales, descargar datos e imprimir documentos. También incluye información sobre las disposiciones legales y el mantenimiento del dispositivo.
National 5 History exam - 2023 (marking instructions)mrmarr
The document provides general marking principles for the National 5 History exam. It outlines 6 types of questions that may be asked and the marking criteria for each. It details the point structure for questions that ask candidates to describe, explain, make a judgement, evaluate evidence, compare sources, and assess how fully a source describes/explains something. For each question type, it provides the maximum marks, how marks will be allocated for knowledge points and developed points, and includes an example question and response.
JCB 535-67 TELESCOPIC HANDLER Service Repair Manual ALL:572775 Onwardsjksmnduiss
This is the Highly Detailed factory service repair manual for theJCB 535-67 TELESCOPIC HANDLER, this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic.JCB 535-67 TELESCOPIC HANDLER Service Repair Workshop Manual provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
Service Repair Manual Covers:
General
Hydraulics
Body and Framework
PlaceAce Control System
Servo Control System
Engine
Transmission
Axles
Brakes
Hydraulic Steering
Electrics
Service Tools
Index
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
NO waiting, Buy from responsible seller and get INSTANT DOWNLOAD, Without wasting your hard-owned money on uncertainty or surprise! All pages are is great to haveJCB 535-67 TELESCOPIC HANDLER Service Repair Workshop Manual.
Looking for some other Service Repair Manual,please check:
https://www.aservicemanualpdf.com/
Thanks for visiting!
8
Mitsubishi FB16KT Forklift Trucks (Controller) Service Repair Manual SN: EFB4...jkskemmdm
This is the Highly Detailed factory service repair manual for theMITSUBISHI FB16KT FORKLIFT TRUCKS (CONTROLLER), this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. they are specifically written for the do-it-yourself-er as well as the experienced mechanic.MITSUBISHI FB16KT FORKLIFT TRUCKS (CONTROLLER) Service Repair Workshop Manual provides step-by-step instructions based on the complete dis-assembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. Complete download comes in pdf format which can work under all PC based windows operating system and Mac also, All pages are printable. Using this repair manual is an inexpensive way to keep your vehicle working properly.
Service Repair Manual Covers:
Foreword
Main Controller
Outline
Controller Components
Logic Card Components
Controller Models
Operation Outline
Drive System
Hydraulic System
Fail-Safe System
Malfunction Detection
Setting
Self-Diagnosis
Other Functions
Display Unit
Inspection and Adjustment
Service Data
Tightening Torque
Troubleshooting for Control Circuits
General Information
Electrical System Diagram
Alarm List
Wiring Schematic
Motors
Motor Installation Positions
Specifications
Structures
Tightening of High-power Cable Terminals
Inspection of Brushes for Wear and Brush Replacement
Procedures and Suggestions for Removal and Installation
Procedures and Suggestions for Disassembly and Reassembly
Troubleshooting
Service Data
Checks and Repairs
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
NO waiting, Buy from responsible seller and get INSTANT DOWNLOAD, Without wasting your hard-owned money on uncertainty or surprise! All pages are is great to haveMITSUBISHI FB16KT FORKLIFT TRUCKS (CONTROLLER) Service Repair Workshop Manual.
Looking for some other Service Repair Manual,please check:
https://www.aservicemanualpdf.com/
Thanks for visiting!
8
JCB 531-T70 TELESCOPIC HANDLER Service Repair Manualjkseodlpled
This document provides tables that list the applicability of service manual topics to different JCB Loadall machine models. The tables cover sections on general information, routine maintenance, body/framework, electrics, hydraulics, transmission, and other systems. The tables indicate which topics apply to each machine model and variant. The purpose is to help technicians find the correct information for the specific machine being serviced.
The memorandum provides principles for marking Life Sciences papers in 2012. It details 20 marking principles, including crediting relevant parts of answers even if extra information is provided, marking the first few reasons or examples given, and being sensitive to answers stated differently but conveying the same meaning. The memorandum also addresses aspects like spelling, abbreviations, diagrams, flow charts, and language.
This document provides instructions for a Life Sciences exam consisting of 13 pages and 150 marks over 2.5 hours. It is divided into 3 sections. Section A contains multiple choice and matching questions about topics in evolution, genetics, human origins, and inheritance patterns. Section B asks students to represent genetic crosses, discuss advantages and disadvantages of genetic engineering, and interpret data on human height. Section C contains diagrams of skulls and asks students to identify species, compare evolutionary trends, and describe evidence for the African origin of humans.
This 10-page memorandum provides marking guidelines for a Life Sciences P2 examination consisting of 150 marks. It details 20 marking principles, including how to mark answers that provide more information than required or have sequencing and language issues. The memorandum then provides answer keys for 50 marks of section A multiple choice and structured questions, 60 marks of section B short answer and diagram labeling questions, and 40 marks of section C essay questions on topics like population growth and endocrine system function.
This document provides instructions for a Life Sciences exam. It consists of 15 pages and students have 2.5 hours to complete it. The instructions state that students must answer all questions, write answers in the answer book provided, number answers according to the question paper, present drawings according to instructions, and write neatly. It also provides information about the number of marks allocated, use of calculators and drawing tools, and copyright notice.
The document provides information about flooding in Bangladesh. It discusses five key reasons for frequent flooding: most land being less than one meter above sea level, monsoon weather, snowmelt from the Himalayas, cyclones in the Bay of Bengal, and two massive rivers flowing into the country. The flooding creates major issues for Bangladesh's large population, destroying homes and affecting livelihoods. Solutions such as flood shelters have been implemented to help manage the frequent flooding.
The document provides guidance on map skills for a geography exam, including how to interpret Ordnance Survey maps, use grid references, measure distances, describe features, and understand different map types. It explains how to analyze maps, aerial photographs, and compare map features. Key skills covered are reading map scales, symbols, relief, land use, settlement patterns, and using maps to describe patterns and distributions.
This document is the cover page for a Life Sciences exam consisting of 16 pages. It provides instructions for candidates taking the exam, including answering all questions, writing answers in the answer book, numbering answers correctly, presenting answers as instructed, using pencil for drawings, only drawing diagrams when asked, and writing neatly. It also allows for the use of a calculator, protractor, and compass where necessary.
This document provides instructions for a Life Sciences exam consisting of three sections worth a total of 150 marks over 21⁄2 hours. Section A is worth 50 marks and includes multiple choice, matching, and short answer questions testing concepts in evolution, ecology and microbiology. Section B is worth 30 marks for each of two structured questions on topics like pollution indicators, deforestation, and comparative anatomy. Section C consists of an essay worth 40 marks. Students are instructed to answer all questions, show workings, use diagrams where required, and write neatly.
This document provides instructions for a Life Sciences exam consisting of 3 sections worth 150 marks over 21⁄2 hours. Section A is worth 50 marks and contains multiple choice, matching, and short answer questions testing various concepts in Life Sciences. Section B is worth 30 marks and contains diagram labeling, sequencing, and longer answer questions on topics like meiosis and protein synthesis. Section C is worth 9 marks and contains labeling and short answer questions testing knowledge of the female reproductive system. The exam paper consists of 14 pages and students are instructed to answer all questions, show their work, and draw diagrams as required. Calculators and drawing tools are permitted.
This document provides instructions for a Life Sciences exam consisting of 150 marks over 2.5 hours. It is divided into three sections: Section A with 50 marks, Section B with 60 marks, and Section C with 40 marks. The paper contains various types of questions including multiple choice, matching columns, labeling diagrams, short answers and longer explanations. Students are instructed to answer all questions in their answer book and show all working where necessary. They are permitted to use a calculator, protractor and compass during the exam.
This document is a 14-page question paper for the Life Sciences P1 exam with the following details:
- Marks: 150
- Time: 2.5 hours
- Consists of 7 sections with multiple choice, matching, short answer and long answer questions testing knowledge of topics like meiosis, genetics, the menstrual cycle, protein synthesis and DNA profiling. Instructions are provided on how to answer the questions and various diagrams accompany some questions.
This document is a 16-page Life Sciences question paper for Grade 12 students taking a test. It consists of various multiple choice and short answer questions testing knowledge of topics like sexual reproduction, population ecology, human physiology, and more. The questions are formatted in numbered sections and subsections, with space provided to write answers directly in the test booklet.
This document provides instructions for a Grade 12 Life Sciences exam. It consists of 14 pages and students have 2.5 hours to complete it. The exam contains 3 sections. Section A has 10 multiple choice questions worth 1 or 2 marks each, and short answer questions worth 1-8 marks. Section B contains diagram and graph interpretation questions worth 1-14 marks. Section C involves investigating the resistance of mosquitoes to DDT over time, with associated graphing and analysis questions worth 1-6 marks. Students are instructed to show all working, use scientific terms correctly, and answer all questions in full sentences in the answer book provided.
(1) This document provides instructions for a Life Sciences exam consisting of 3 sections with multiple choice, matching, and short answer questions. It gives the time allotted, 150 marks, and details that all answers must be written in the answer book and drawings done in pencil.
(2) Section A includes 7 multiple choice questions testing content knowledge, 7 short answer questions requiring biological terms, and 6 matching questions. Section B has short answer questions on evolution, adaptations, natural selection, and speciation. Section C addresses disease transmission, resource use, and human evolution.
This document is a 16-page exam paper for Life Sciences P2 from February/March 2010. It contains instructions for the exam, which is divided into two sections worth a total of 150 marks and takes 2.5 hours. Section A contains multiple choice and short answer questions testing concepts related to evolution, ecology, genetics and the timeline of life on Earth. Section B includes several longer answer questions requiring explanations and descriptions related to topics like natural selection, Lamarckism, water pollution and plant uses.
1. The document is a sample biology exam paper for Class XII consisting of 5 sections with a total of 26 questions. It provides instructions for the exam, including question types and number of marks for each.
2. The sections cover very short answer (1 mark), short answer I (2 marks), short answer II (3 marks), value based question (4 marks), and long answer questions (5 marks). Sample questions are provided covering topics in biology.
3. Detailed instructions are given about the number and type of questions, internal choices available, and general guidelines for answering the paper.
Class 12 Cbse Biology Sample Paper 2012-13Sunaina Rawat
- Develop extensive root systems to absorb water from deeper soil layers.
du
- Have thick cuticle and sunken stomata to reduce transpiration.
- Possess water storage tissues like succulents.
.e
- Droop or shed leaves during drought.
w
w
Animals:
- Migrate to areas with available water.
w
- Enter state of aestivation or hibernation during drought.
- Concentrate urine to reduce water loss.
- Obtain water from metabolic processes like respiration.
28. (a) Labelled diagram of sectional view of human ovary showing:
- Ovarian surface
Test Bank For Campbell Biology 12th Edition Urry Cain All Chapters Questions ...Passing Grades
Download Test Bank For Campbell Biology 12th Edition Urry Cain All Chapters Questions & Answers https://www.pasinggrades.com/item/test-bank-for-campbell-biology-12th-edition-by-urry/2724
The document is an 11-page memorandum for a Life Sciences exam consisting of principles for marking, answers to exam questions, and a section on marking criteria. It provides concise summaries and the essential information needed to mark exam responses in 3 sentences or less.
This document provides information about a CBSE board examination for Studymate Solutions. It includes instructions for students taking the exam, such as writing their code number and serial numbers for questions. The biology section of the exam is outlined, with details about the four sections (A, B, C, D), number of questions in each section, and allocation of marks. General instructions are provided about questions being compulsory and choices for internal questions. Diagrams should be labeled where necessary. Section A contains 8 one-mark questions, Section B has 10 two-mark questions, Section C comprises 9 three-mark questions, and Section D consists of 3 five-mark questions.
CBSE XII BIOLOGY SAMPLE PAPER BY KENDRIYA VIDYALAYA Gautham Rajesh
This document provides a sample question paper format for Class 12 Biology exam. It includes the exam structure, marking scheme, unit-wise weightage and distribution of questions. The paper will be of 70 marks and 3 hours duration. It will have questions in 4 sections - very short answer (8 marks), short answer I (20 marks), short answer II (27 marks) and long answer (15 marks). The topics covered are Reproduction, Genetics and Evolution, Biology in human welfare, Biotechnology and Ecology. The question paper aims to include 3-5 marks worth of value based questions to test various ethical and social issues. A blue print provides the breakdown of number and type of questions from each unit across the sections.
This memorandum provides marking guidelines for Life Sciences Paper 2. It consists of 20 pages detailing the answers and marks allocated for each question. Principles for marking include stopping when maximum marks are reached, marking the first answer if more than required are given, and crediting relevant parts of longer answers. Abbreviations must be defined to receive marks. Diagrams or flow charts lose marks if descriptions are required.
Gregor Mendel experimented with pea plants and discovered the principles of inheritance, including dominance and segregation. He found that traits are determined by discrete factors, now known as genes, which are inherited from parents. Offspring receive one of each pair of genes from their parents. During meiosis, homologous chromosomes pair up and genes segregate so each gamete receives one of each gene. This ensures genetic variation in offspring.
This document discusses cell division through mitosis and meiosis. It provides examples of exam questions from 2003 to 2008 related to stages of cell division, number of chromosomes, and products of meiosis. Over the years shown, the quantity of exam questions related to cell division remained steady between 2 and 3 questions per year. The document serves as a review of cell division topics covered on biology exams.
This document provides the instructions and content for a sample biology exam consisting of 26 questions across 5 sections (A-E). Section A contains 5 short answer questions worth 1 mark each. Section B contains 5 short answer questions worth 2 marks each. Section C contains 11 short answer questions worth 3 marks each. Section D contains 1 value-based question worth 4 marks. Section E contains 3 long answer questions worth 5 marks each, with internal choices provided. The document provides examples of question content assessing topics such as tissue culture, cellular defense mechanisms, assisted reproduction techniques, PCR, genetics, evolution, disease, biotechnology, and ecosystems.
Similar to Life sciences p1 feb march 2012 eng version 1 (20)
The document summarizes human reproduction. It describes sexual reproduction involving the fusion of egg and sperm cells. The male reproductive system produces sperm in the testes and transfers them through the penis during intercourse. The female reproductive system involves ovaries releasing eggs, fallopian tubes and uterus where fertilization and fetal development occur. The menstrual cycle and process of fertilization are also outlined.
This document provides examination guidelines for the Grade 12 Life Sciences exam in South Africa. It consists of 19 pages covering: the format and weighting of the exam papers; the formal assessment program and sequence of topics; and an elaboration of the content to be assessed for each topic, including DNA, meiosis, reproduction, genetics and inheritance. The topics will be assessed across two question papers that contain short answers, structured questions and an essay. The guidelines are intended to clarify the scope of the exam and assist teachers in preparing learners.
1. The document defines evolution as gradual changes in organisms over generations due to natural selection. It discusses key figures in the development of evolutionary theory like Lamarck, Darwin, and Wallace.
2. Mechanisms of evolution include genetic variation, inheritance of traits, natural selection of advantageous variations, and accumulation of small changes over long periods of time leading to new species.
3. Evidence for evolution comes from fossils that show gradual changes in ancient species over millions of years, as well as anatomical, genetic, and biochemical similarities between living and extinct species, indicating common ancestry.
1) Fossil evidence from sites in South Africa like Sterkfontein provide insight into early hominids that lived over 3 million years ago, including Australopithecus africanus.
2) As hominids evolved, they exhibited skeletal changes associated with bipedalism as well as increases in brain size and cultural adaptations like tool use.
3) Genetic and fossil evidence supports the 'Out of Africa' theory where modern humans evolved in Africa around 200,000 years ago and migrated elsewhere, replacing earlier hominid species like Neanderthals.
Meiosis is a cell division process that produces gametes, or sex cells, with half the normal number of chromosomes. It occurs in two stages: Meiosis I splits homologous chromosome pairs, resulting in haploid cells, and Meiosis II splits the remaining sister chromatids into individual chromosomes, resulting in four haploid cells. This ensures that offspring receive a mixture of maternal and paternal chromosomes and introduces genetic variation through processes like crossing over during prophase I. Meiosis is essential for sexual reproduction, as it maintains the chromosome number between generations and produces genetic diversity in offspring.
This document discusses genetics and inheritance of genetic diseases. It covers Gregor Mendel's experiments with pea plants which laid the foundations of genetics, including genes, alleles, dominant and recessive traits. It also discusses chromosomes, genetic crosses, sex-linked inheritance and examples of genetic disorders like cystic fibrosis and muscular dystrophy. The role of mutations in causing genetic diseases as well as the process of genetic counseling is summarized.
DNA controls cellular activities and protein synthesis. It is found in the cell nucleus as a double-stranded helix made up of nucleotides. DNA replicates itself using DNA polymerase and stores the genetic code in genes that determine protein sequences. During transcription, a complementary mRNA strand is produced from DNA in the nucleus. Translation then occurs on ribosomes in the cytoplasm, where tRNA brings amino acids to the ribosome according to mRNA codons, assembling proteins from the genetic code carried by DNA.
This document discusses speciation and the factors that can lead to the formation of new species. It outlines two main types of speciation: allopatric speciation which is caused by geographic isolation, and sympatric speciation which does not require a large geographic barrier. Factors that can influence speciation include genetic variation due to isolation, inbreeding within small isolated populations, outbreeding between unrelated individuals, founder effects in small groups colonizing new areas, population bottlenecks from catastrophic events, and reproductive isolation through mechanisms like breeding at different times or adapting to different pollinators.
This memorandum provides guidelines for marking the 2011 Life Sciences Paper 2 for the National Senior Certificate in South Africa. It consists of 20 principles to ensure consistent and fair marking. Some key principles include: awarding marks for the first few reasons/examples provided, even if incorrect; accepting answers that demonstrate understanding despite differences in format; and not penalizing for spelling errors if the word is recognizable. The memorandum also provides mark allocations for each question and sub-question.
1. NATIONAL
SENIOR CERTIFICATE
GRADE 12
VERSION 1 (NEW CONTENT) FOR FULL-TIME CANDIDATES
MARKS: 150
TIME: 2½ hours
LIFE SCIENCES P1
FEBRUARY/MARCH 2012
This question paper consists of 15 pages.
Copyright reserved Please turn over
2. Life Sciences/P1 (Version 1) (Full-time) 2 DBE/Feb.–Mar. 2012
NSC
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Answer ALL the questions.
Write ALL the answers in your ANSWER BOOK.
Start the answers to each question at the top of a NEW page.
Number the answers correctly according to the numbering system used in this
question paper.
Present your answers according to the instructions of each question.
ALL drawings should be done in pencil and labelled in blue or black ink.
Draw diagrams or flow charts only when asked to do so.
The diagrams in this question paper are NOT necessarily drawn to scale.
Do NOT use graph paper.
You may use a non-programmable calculator, protractor and a compass.
Write neatly and legibly.
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3. Life Sciences/P1 (Version 1) (Full-time) 3 DBE/Feb.–Mar. 2012
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SECTION A
QUESTION 1
1.1 Various options are provided as possible answers to the following questions.
Choose the correct answer and write only the letter (A to D) next to the
question number (1.1.1 to 1.1.10) in your ANSWER BOOK, for example
1.1.11 D.
1.1.1 Genes only code for …
A
B
C
D
starch.
proteins.
glucose.
fats.
1.1.2 The wings of a butterfly and the wings of a bird are examples of …
A
B
C
D
homologous structures.
vestigial structures.
analogous structures.
common ancestry.
1.1.3 Which ONE of the following is an acceptable explanation based on
Darwin's theory of evolution?
A
B
C
D
Humans evolved from apes
A mother who had her appendix removed will give birth to
children without an appendix
An increasing number of TB-causing bacteria are resistant to
antibiotics because those that are resistant are able to survive
and reproduce
Giraffes have long necks because the previous generation
stretched their necks to reach the leaves in tall trees
1.1.4 As DNA was extracted from cells of E. coli it was analysed for its
nitrogenous base composition. It was found that 38% of the bases
are cytosine. What percentage of the bases are adenine?
A
B
C
D
12
24
38
62
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4. Life Sciences/P1 (Version 1) (Full-time) 4 DBE/Feb.–Mar. 2012
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1.1.5 Below is a list of fossils discovered in South Africa.
1. Mrs Ples
2. Taung child
3. Little foot
4. Karabo
Which of the fossils above are classified in the genus
Australopithecus?
1, 2 and 3 only
1, 2, 3 and 4
2, 3 and 4 only
1, 3 and 4 only
1.1.6 A mother has blood group B and a father blood group O. They
have three children and an adopted child. The blood groups of the
children are represented in the table below.
CHILDREN BLOOD GROUPS
Sindy AB
Nobubele B
Kenny O
Gabriele B
A
B
C
D
Which child is adopted?
A
B
C
D
Sindy
Nobubele
Gabriele
Kenny
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5. Life Sciences/P1 (Version 1) (Full-time) 5 DBE/Feb.–Mar. 2012
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QUESTIONS 1.1.7 to 1.1.9 are based on the diagrammatic
representation below of a part of two different nucleic acid molecules
found in the cells of organisms during a stage in the process of protein
synthesis.
A
G
U
C
T
Molecule 1 Molecule 2
1.1.7 The diagram above illustrates the process of ...
A
B
C
D
replication.
transcription.
translation.
mutation.
1.1.8 The process illustrated above occurs in the …
A
B
C
D
cytoplasm.
centrosome.
ribosome.
nucleus.
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6. Life Sciences/P1 (Version 1) (Full-time) 6 DBE/Feb.–Mar. 2012
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1.1.9 An observable difference between molecule 1 and molecule 2 is
that …
A
B
C
D
molecule 1 is double stranded and molecule 2 is single
stranded.
molecule 1 contains deoxyribose sugars and molecule 2
contains ribose sugars.
molecule 1 has thymine and molecule 2 has uracil.
molecule 1 is longer than molecule 2.
1.1.10 The mRNA sequence from a portion of a DNA template GATCAA
is …
A
B
C
D
CTAGTT.
CUAGUU.
AGCTGG.
AGCUGG. (10 x 2) (20)
1.2 Give the correct biological term for each of the following descriptions. Write
only the term next to the question number (1.2.1 to 1.2.9) in your ANSWER
BOOK.
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
An allele that is not shown/expressed in the phenotype when found
in the heterozygous condition
Chromosomes other than the sex chromosomes
The production of genetically identical organisms using
biotechnology
More than two haploid sets of chromosomes found in the cells of
an organism
The transfer of a selected gene from one organism to another
A variable that is manipulated during an investigation
All the genes of a particular species
The position of a gene on a chromosome
The complete disappearance of a species from Earth (9)
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7. Life Sciences/P1 (Version 1) (Full-time) 7 DBE/Feb.–Mar. 2012
NSC
1.3 Indicate whether each of the statements in COLUMN I applies to
A ONLY, B ONLY, BOTH A AND B or NONE of the items in
COLUMN II. Write A only, B only, both A and B, or none next to the
question number (1.3.1 to 1.3.6) in the ANSWER BOOK.
COLUMN I COLUMN II
1.3.1 The study of the past and
present distribution of
individual species as evidence
for evolution
A: Palaeontology
B: Biogeography
1.3.2 The evidence used to support
the 'Out of Africa' hypothesis
by tracing the maternal
lineage
A: Y chromosome
B: Mitochondrial DNA
1.3.3 Inheritance of the disorder
linked to a sex chromosome
A: Colour blindness
B: Sickle cell anaemia
1.3.4 First Homo species to have
migrated out of Africa
A: Homo habilis
B: Homo sapiens
1.3.5 Natural selection as an
explanation for evolution
A: Alfred Wallace
B: Charles Darwin
1.3.6 Organisms have an
inherent/internal drive to
change
A: Lamarck
B: Wallace
(6 x 2) (12)
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8. Life Sciences/P1 (Version 1) (Full-time) 8 DBE/Feb.–Mar. 2012
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1.4 The diagram below represents a cladogram (phylogenetic tree)
showing primate evolution. The letters, A to E, indicate the
characteristics which are shared by the different species of primates
which follow the letter. The point where various species of primates
differ from each other is indicated by the branching-off/split into new
species.
Chimpanzee Human
Cladogram showing primate evolution
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
Which LETTER represents a common characteristic of all
primates?
List THREE structural characteristics represented by the LETTER
named in QUESTION 1.4.1.
Which organism is most similar to the chimpanzee?
Name any TWO structural characteristics of the skull that make the
organism named in QUESTION 1.4.3 different from the
chimpanzee.
Write down the names of the organisms that display the
characteristic C but not characteristics D and E.
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(1)
(3)
(1)
(2)
(2)
(9)
TOTAL SECTION A: 50
Capuchin
monkey
Vervet
monkey Rhesus
monkey
Gibbon
A
B
C D
E
9. Life Sciences/P1 (Version 1) (Full-time) 9 DBE/Feb.–Mar. 2012
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SECTION B
QUESTION 2
2.1 Study the diagrams below which illustrate some phases of meiosis I.
2.1.1
2.1.2
2.1.3
Label parts A and B respectively.
The diagrams above are not placed in the correct sequence. Use
the diagram numbers to write down the correct sequence in which
part of the process of meiosis I takes place.
Give TWO observable reasons why the phases in the diagram are
part of meiosis I.
Copyright reserved Please turn over
(2)
(2)
(2)
(6)
Diagram 2
Diagram 3
Diagram 1
A
B
PHASES OF MEIOSIS
10. Life Sciences/P1 (Version 1) (Full-time) 10 DBE/Feb.–Mar. 2012
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2.2 The karyotype below is that of a male person with a genetic disorder called
Klinefelter syndrome.
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18
19 20 21 22 23
A karyotype of a male with Klinefelter syndrome
2.2.1
2.2.2
State ONE visible difference between the karyotype above and the
karyotype of a normal male.
Use your knowledge of meiosis to explain how Klinefelter
syndrome could have resulted.
Copyright reserved Please turn over
(2)
(6)
(8)
2.3 A boy's mother had a patch of white hair called a 'white forelock' which is
caused by a dominant allele H. The mother is heterozygous for this trait. His
father does not have a 'white forelock'. The symbol for the recessive allele
is h.
Represent a genetic cross to determine the possible genotypes and
phenotypes of the children. (6)
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2.4 Study the pedigree diagram below which shows the inheritance of
flower colour in a certain plant over three generations.
Use the following symbols for the contrasting alleles:
W – for white colour
R – for red colour
KEY:
2.4.1
2.4.2
A
Name the type of inheritance shown in the pedigree diagram
above.
Explain your answer to QUESTION 2.4.1.
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(1)
(3)
2.4.3 Use the symbols R and W and write down the genotypes of each of
the following flowers:
(a)
(b)
(c)
A
B
C (3 x 2) (6)
(10)
[30]
B
C
Pedigree diagram showing inheritance of flower colour in a certain
type of plant over three generations
White flower colour
Red flower colour
Flower with equal distribution of white
and red colour
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NSC
QUESTION 3
3.1 A young couple wants to have a child, but they are aware of a serious genetic
disorder in one of their families that could be carried through to their offspring.
In this case state:
3.1.1
ONE advantage of DNA testing
3.1.2
THREE benefits of genetic counselling
Copyright reserved Please turn over
(1)
(3)
(4)
3.2 State TWO ways in which DNA profiling can be used to our advantage. (2)
3.3 Tabulate the structural differences between australopithecines, such as
Australopithecus sediba, and humans by referring to the size of the skeleton,
cranium and the chin. (7)
3.4 Read the passage below and then answer the questions that follow.
All types of domestic dogs are capable of interbreeding to produce puppies,
which will eventually be capable of interbreeding with any other domestic dog.
The first dog evolved from a population of wolves. It is thought that wolves
that were tamer than usual 'adopted' humans in order to scavenge food from
refuse dumps near human settlements.
Although wolves look very similar to some breeds of domestic dogs, wolves
and domestic dogs cannot interbreed.
3.4.1
3.4.2
3.4.3
Explain why all breeds of domestic dogs belong to the same
species.
Describe how a population of wolves may have undergone
speciation to form the first population of dogs.
Describe how artificial selection led to different breeds of domestic
dogs.
(2)
(6)
(2)
(10)
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3.5 A group of learners from a school decided to do an investigation, using
scientific literature, on the evidence presented by fossils to support the theory
of evolution.
They formulated the following hypothesis:
'First appearance of fossils of single-cell/simple organisms are found in
the oldest layers of rock'
A summary of their research from the scientific literature is shown in the table
below.
ERA GEOLOGICAL
TIMESCALE
(MILLION YEARS
AGO)
MAJOR EVENTS IN THE HISTORY OF LIFE
Cenozoic 65–present Appearance of Homo species
Flowering plants, insects, birds and mammals
became dominant
Mesozoic 240–65 Origin of flowering plants and mammals
Dinosaurs, insects, fishes became dominant
Origin of reptiles, early fishes, insects and
spore bearing plants which became dominant
Palaeozoic 570–240
Origin of simple marine invertebrates and
animals with hard parts
Cryptozoic 4 600–570 Origin of protists (unicellular organisms)
(Pre-Cambrian) Origin of photosynthetic bacteria
3.5.1
3.5.2
3.5.3
3.5.4
According to the results in the table above, will the learners accept
or reject their hypothesis?
Explain your answer to QUESTION 3.5.1.
Explain the implications to the evolution theory if fossils of
dinosaurs from the early Pre-Cambrian period were found.
Explain why the invertebrates might have appeared earlier than our
fossil record currently shows.
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(1)
(2)
(2)
(2)
(7)
[30]
TOTAL SECTION B: 60
14. Life Sciences/P1 (Version 1) (Full-time) 14 DBE/Feb.–Mar. 2012
NSC
SECTION C
QUESTION 4
4.1 The table below shows the percentage distribution of blood groups in a
province in South Africa.
BLOOD GROUPS
A B AB O
35 15 10 40
4.1.1
4.1.2
4.1.3
How many genes control the blood groups shown above?
Explain how it is genetically possible to have four blood groups in a
population.
Draw a pie chart using the information in the table above. Show
ALL calculations.
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(1)
(2)
(8)
(11)
4.2 Researchers observed that the height of a particular plant (Achillea
millefolium) found at different altitudes varied.
They carried out the following procedure:
• 30 seeds of these plants were collected at each of four different altitudes.
• Each group of 30 seeds were then grown under the same environmental
conditions in a greenhouse.
• The height of each plant was measured and the average for each group
was calculated.
• The average height of each group was recorded next to the altitude at
which the seeds were collected.
The following results were obtained:
ALTITUDE
(m)
AVERAGE HEIGHT OF PLANTS
(cm)
1 000 75
1 500 50
2 000 35
2 500 20
4.2.1
4.2.2
State a conclusion from the above investigation.
Describe TWO things that the researchers did which ensured the
validity of the procedure.
(3)
(2)
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NSC
4.3 Describe how point mutations, frame-shift mutations and meiosis contribute to
genetic variation.
Copyright reserved
Synthesis:
(17)
(3)
(20)
NOTE: NO marks will be awarded for answers in the form of flow
charts or diagrams.
TOTAL SECTION C:
GRAND TOTAL:
40
150
4.2.3 In terms of natural selection, explain why the average height of the
plants at 2 500 m is different from the average height of the plants at
lower altitudes. (4)
(9)