This document contains exercises on microscope magnification and size conversions. It asks students to calculate actual sizes of cells and organelles given microscope magnifications and drawn sizes. It also asks students to order common biological structures by size and define what a scale bar is in a microscopic image.
This is a quick revision test designed to make sure you know all the key terms and diagrams from the IB Biology specification.
It covers the whole of the first core topic in the International Baccalaureate Biology on cells and is suitable for both Standard and Higher Level students sitting examinations from 2016 onwards.
It is out of 100 marks!
All the answers are also provided in this file.
This is a quick revision test designed to make sure you know all the key terms and diagrams from the IB Biology specification.
It covers the whole of the first core topic in the International Baccalaureate Biology on cells and is suitable for both Standard and Higher Level students sitting examinations from 2016 onwards.
It is out of 100 marks!
All the answers are also provided in this file.
This presentation has a short introduction about the different types of tissues (epithelium, connective, muscular, nervous), but focuses mainly on epithelial tissues - its characteristics, functions, and types.
This also contains the different surface modifications of epithelial tissues - apical, lateral and basal.
Lastly, glands are also discussed here. Endocrine and exocrine glands are differentiated based on characteristics and functions.
Cell as basic unit of life ppt 88 slidesICHHA PURAK
This Power point presentation describes Cell as basic unit of life. The slides provide information about Discovery of cell,cell theory,number,size,shape and cell types .Differentiates prokaryotic and eukaryotic cell types and point out major differences in plant and animal cell and also about structure and function of cell organelles
This presentation has a short introduction about the different types of tissues (epithelium, connective, muscular, nervous), but focuses mainly on epithelial tissues - its characteristics, functions, and types.
This also contains the different surface modifications of epithelial tissues - apical, lateral and basal.
Lastly, glands are also discussed here. Endocrine and exocrine glands are differentiated based on characteristics and functions.
Cell as basic unit of life ppt 88 slidesICHHA PURAK
This Power point presentation describes Cell as basic unit of life. The slides provide information about Discovery of cell,cell theory,number,size,shape and cell types .Differentiates prokaryotic and eukaryotic cell types and point out major differences in plant and animal cell and also about structure and function of cell organelles
3D-Bioprinting coming of age-from cells to organsDaniel Thomas
Over the past decade, annual spending on pharmaceutical development to treat many endocrinological systems has increased exponentially.
Currently, preclinical studies to test the safety and efficiency of new drugs, use laboratory animals and traditional 2D cell culture models. Neither of these methods are completely accurate reflections of how a drug will react in a human patient.
A solution has emerged in the form of 3D-Bioprinting technology, developed for the scalable, accurate and repeatable deposition of biologically active materials. With advances in this biomanufacturing technology, durable biological tissues for use in testing new pharmaceutical products are now being harnessed and refined.
The Microscope Zacharias Janssen is to be credited for i.docxoreo10
The Microscope
Zacharias Janssen is to be credited for inventing the first truly compound microscope
Microscope
What is a microscope?It is a tool or instrument often used in laboratories to aid in viewing organisms that cannot be seen with an unaided eye
Types of microscope
Biologist often used different microscope
Compound light microscope
Dissection microscope
Scanning electron microscope(SEM)
Transmission electron microscope(TEM)
but of all, the compound light microscope is what we shall be using
Dissecting Vs. Compound light microscope
Scanning Vs. Transmission electron Microscope
Microscope Compound light microscope is simply a microscope that has at least two magnifying lenses (the oculars and the objectives)Binocular microscope possess two eyepieces (what we shall be using in the lab)Monocular microscope possess one eyepieces
Bi = two mono = one
Microscopes Electron microscope magnifies the specimen 1000X larger than the light microscopeThe Dissecting microscope on the other hand has a low magnification power (7X to 30X). It is used to view large objects
*
Microscope There are a variety of light microscope but each differs by the emission of light through the specimen that is viewed
Phase contrast
Darkfield
Polarizing
UV
Terms Bright Field: illumination, sample contrast comes from absorbance of light in the sample.
Cross polarized light: illumination, sample contrast comes from rotation of polarized light through the sample.
TermsDark Field: illumination, sample contrast comes from light scattered by the sample.Working distance: distance between the specimen and the objective lens ( is this distance greater with the 40x or the 10x objective ? Ans: 10x )
Phase Contrast: illumination, sample contrast comes from interference of different path lengths of light through the sample.
labelsLight source, a light or a mirror (7)Diaphragm and condenser lens (8)Objective (3)Ocular lens (eyepiece) (1)In addition the vast majority of microscopes have the same 'structural' components:Objective turret/ nosepiece (to hold multiple objective lenses) (2)
LabelsStage (to hold the sample) (6)Focus wheel to move the stage (4 - coarse adjustment, 5 - fine adjustment) Stage adjustment knobs (9)
Terms used when dealing with a microscope
The headIt supports the two sets of magnifying lenses
The Oculars (eyes)It is the lenses used to view the specimen.Located on the eyepieceHas a magnification of 10X
Microscope
Interpupillary distanceThis is the distance between the eyepiece on a binocular microscopeIt can be adjusted to suit your eyes
Field of view “FOV”the diameter of the circle of light that you see when looking into a microscope
Microscope (cont..)
ObjectivesThese are the four lenses on the revolving nosepieceFour types exist: 4x , 10x , 40x , 100x
4X : the scanning lens
10X: the intermediate lens
40X: the high power lens
100X: the oil immersion lens
Microscope(cont..)
The ArmThe part ...
8 A Cellular Neural Network based system for cell counting in culture of biol...Cristian Randieri PhD
A Cellular Neural Network based system for cell counting in culture of biological cells - Proceedings of the 1998 IEEE International Conference on Control Applications, Trieste (Italy) 1-4 September 1998, Vol. 1, pp. 341-345.
di L. Bertucco, G. Nunnari, C. Randieri
Abstract
Cell counting methods are important tools in molecular biology as well as clinical medicine. It is not always technically possible to measure quantitatively the events of cellular growth and fission. When it can be done, the procedures are neither so simple nor without excessive tedium as to lend themselves practically to the necessary replication of observations with large number of individual cells. In this paper, we describe a CNN based system that uses a CNN simulator for counting cells. The performances of the proposed system are illustrated by a simple cell counting experiment using a Petroff- Hauser based counter system.
1 3Organ TransplantCamellia C LittleENG2005202019.docxoswald1horne84988
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Organ TransplantCamellia C LittleENG/200
5/20/2019Organ Transplant
Modern medicine has come a long way when it comes to saving human life. Organ transplant is one of the most important inventions in medicine. Organ transplant was developed to give hope to patients whose organs have failed to function. Organ shortage is the greatest challenge facing the field of organ transplantation today. More funding should be spent on the creation of artificial organs, like 3-D bioprinting, using stem cells to grow the organs in a lab and artificial pumps. Level One Heading
Replace the level one heading with the words for your heading. The heading must be in bold font. Headings help your audience track the sub-topics discussed in the body of the essay or report. Begin a new heading for each sub-topic.
Be sure to indent the first line of each paragraph between five and seven spaces by pressing the Tab key one time on the keyboard. In addition, remember to double space the entire paper using the double space functionality in Word. This template is already formatted for double spacing. Read more: Center for Writing Excellence>Tutorials and Guides>Software Tutorials and Guides>Formatting Tutorial for APA.
In addition, keep in mind an academic essay should contain at least five paragraphs, which includes the introduction (introductory paragraph), the body (which is generally at least 3 paragraphs), and the conclusion (generally one paragraph). Most well-developed paragraphs contain at least 3-5 sentences, one of which is the topic sentence. Limit each body paragraph to one main idea.
Conclusion
The closing paragraph is designed to bring the reader to your way of thinking if you are writing a persuasive essay, to understand relationships if you are writing a comparison/contrast essay, or simply to value the information you provide in an informational essay. The closing paragraph summarizes the key points from the supporting paragraphs without introducing any new information.
References
This is a hanging indent. To keep the hanging indent format, triple click your mouse on this line of text and replace the information with your reference entry. You can use the Reference and Citation Examples (Center for Writing Excellence>Tutorials and Guides>Reference and Citation Examples) to help format your source information into a reference entry.
The reference page always begins on the top of the next page after the conclusion.
Week 2 Argument Paper Outline Template
ENG/200 Version 2
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Organ TransplantCamellia LittleENG/200
5/13/2019
Jennifer Kubach
Organ Transplant
More funding should be spent on the creation of artificial organs, like 3-D bioprinting, using stem cells to grow the organs in a lab and artificial pumps. 3-D Bioprinting
3-D bioprinting has a great potential to solve the increasing global organ shortage that we face in the healthcare field.
· Bioprinting could replace organ donors
· This technology has the potential to replace organ .
Learning Objectives:
How to add optical imaging capabilities to your lab
How to detect very few cells
How to differentiate multiple signals within the same animal
How to properly acquire and analyze data
How to do ex vivo imaging…and much more
In this webinar, Katie will answer the most frequently asked questions in the preclinical optical imaging field. Whether you are just exploring the idea of adding optical capabilities to your lab or you’ve been imaging for years, you won’t want to miss the opportunity to add some of these tricks to your arsenal. Everything from substrates to image analysis will be discussed!
Similar to Exercises on microscope magnifications and conversions (20)
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Exercises on microscope magnifications and conversions
1.
Platon IB Diploma Programme
Biology HL
Exercises on microscope magnification and conversions
1. A student is using an optical microscope to observe a plant cell. He
draws the cell image being 120 mm in length. The eyepiece lens
magnification is 10X and the objective lens magnification is 40X.
Calculate the actual size of the cell.
(Assume that the student is drawing at the same scale with the
magnified image)
3. Calculate the actual size of these Chlorella cells. You should measure
Then prepare a table with the cell number, the image size and the actual
(specimen) size.
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2. Explain what is a scale bar in any microscopic image.
at least five cells. Write a number next to each cell that you measured.
2. 4. If a mitochondrion has a length of 10 µm and a student’s
drawing of the mitochondrion is 20 mm, what is the magnification
of the drawing?
5. Place the following organisms and structures in order of increasing
size. Next to each organism/structure note the corresponding
approximate size.
(a) animal cell, (b) plant cell, (c) thickness of plasma membrane (d) virus,
(e) molecules (f) mitochondrion
6. Calculate the actual size of this organelle which is a ________________
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