Quiz 1
Biology 307 Dr. Harold L Katcher UMUC
Fall 2015
Please note that you may have to look up some terms on the Internet – but these are things you need to know, and being able to find information (good and true information) is a valuable skill).
Please note that your answers MUST be in your own words, if they are not and not surrounded by quotes that is plagiarism which will be reported to the dean.
These questions are elementary or should be known by anyone who's taken basic biology (or read Starr). For more advanced concepts I'll ask you to explain, in your own words in essay questions. The numbers in front of those questions – say “391.- 400.”,(just kidding), means that the question is worth ten of the multiple-choice questions (each of which only has one number in front of it) so DO NOT CHANGE MY NUMBERING and do not make them into ten questions – there may be fewer than ten parts or more than ten parts to the question (what I look for when I grade it, “does the student mention a, b, c ?”)I just calculate the value of that question using the simple algorithm : Value of question in % = Total of numbers attached to the question divided by the total number of questions. Then I multiply that by your grade expressed as a decimal fraction (85% = 0.85)-and add together all the subtotals (Multiple-choice questions are either right or wrong)and there's your grade! Sounds tedious? It would be, but I worked for a time as a professional computer programmer – so I don't do it by hand. I just grade your essay as an essay and give it any grade from zero to one hundred and the computer does the rest. Which is also why I want the quiz answers in the form I ask, so please don't change the numbering, don't give me more than letter answers for the multiple choice – but I do grade every essay question like an essay – and if it's copies it gets a zero -everything must be in your own words, and in complete sentences and spelling and grammar count. I may give you an extension on when it's due, but as of now – by Monday, midnight (instead of Sunday – it's a long quiz for some (the m/c part would take me no more than 15 minutes – but that's me) short for others – for those for whom the quiz is short, spend your excess time giving good answers to the essays.
RETURN ONLY THE COMPLETED ANSWER SHEET BY PASTING IT INTO THE ASSIGNMENT FOLDER
ONLY give letter answers for multiple choice questions. Only use the answer sheet provided and make sure the completed answers are in by Monday, midnight to get graded. DO NOT CHANGE MY NUMBERING – Questions 100- 109 is NOT ten questions – it's one essay question worth as much as ten multiple-choice questions.
1.
The molecular “machines” (those components that do things) of the cell are the
a.
proteins.
b.
carbohydrates
c.
DNA
d.
energy
e.
homeostasis
2.
Silicon is an element, look it up in the Periodic table and answer the following questions
a)What is its chemical symbol?
b)H ...
Biology 204 Principles of Biology I Assignment 1CMichael Taylor
Biology 204 Principles of Biology I Assignment 1C
For students with first names starting with the letters O to Z.
This assignment is graded out of 110 points, and is worth 10% of your final mark. Please submit this assignment after you have completed Chapter 7 and before you write the midterm exam.
Quiz 1
Biology 307 Dr. Harold L Katcher UMUC
Fall 2015
Please note that you may have to look up some terms on the Internet – but these are things you need to know, and being able to find information (good and true information) is a valuable skill).
Please note that your answers MUST be in your own words, if they are not and not surrounded by quotes that is plagiarism which will be reported to the dean.
These questions are elementary or should be known by anyone who's taken basic biology (or read Starr). For more advanced concepts I'll ask you to explain, in your own words in essay questions. The numbers in front of those questions – say “391.- 400.”,(just kidding), means that the question is worth ten of the multiple-choice questions (each of which only has one number in front of it) so DO NOT CHANGE MY NUMBERING and do not make them into ten questions – there may be fewer than ten parts or more than ten parts to the question (what I look for when I grade it, “does the student mention a, b, c ?”)I just calculate the value of that question using the simple algorithm : Value of question in % = Total of numbers attached to the question divided by the total number of questions. Then I multiply that by your grade expressed as a decimal fraction (85% = 0.85)-and add together all the subtotals (Multiple-choice questions are either right or wrong)and there's your grade! Sounds tedious? It would be, but I worked for a time as a professional computer programmer – so I don't do it by hand. I just grade your essay as an essay and give it any grade from zero to one hundred and the computer does the rest. Which is also why I want the quiz answers in the form I ask, so please don't change the numbering, don't give me more than letter answers for the multiple choice – but I do grade every essay question like an essay – and if it's copies it gets a zero -everything must be in your own words, and in complete sentences and spelling and grammar count. I may give you an extension on when it's due, but as of now – by Monday, midnight (instead of Sunday – it's a long quiz for some (the m/c part would take me no more than 15 minutes – but that's me) short for others – for those for whom the quiz is short, spend your excess time giving good answers to the essays.
RETURN ONLY THE COMPLETED ANSWER SHEET BY PASTING IT INTO THE ASSIGNMENT FOLDER
ONLY give letter answers for multiple choice questions. Only use the answer sheet provided and make sure the completed answers are in by Monday, midnight to get graded. DO NOT CHANGE MY NUMBERING – Questions 100- 109 is NOT ten questions – it's one essay question worth as much as ten multiple-choice questions.
1.
The molecular “machines” (those components that do things) of the cell are the
a.
proteins.
b.
carbohydrates
c.
DNA
d.
energy
e.
homeostasis
2.
Silicon is an element, look it up in the Periodic table and answer the following questions
a)What is its chemical symbol?
b)H ...
Biology 204 Principles of Biology I Assignment 1CMichael Taylor
Biology 204 Principles of Biology I Assignment 1C
For students with first names starting with the letters O to Z.
This assignment is graded out of 110 points, and is worth 10% of your final mark. Please submit this assignment after you have completed Chapter 7 and before you write the midterm exam.
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
Toxic effects of heavy metals : Lead and Arsenicsanjana502982
Heavy metals are naturally occuring metallic chemical elements that have relatively high density, and are toxic at even low concentrations. All toxic metals are termed as heavy metals irrespective of their atomic mass and density, eg. arsenic, lead, mercury, cadmium, thallium, chromium, etc.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
DERIVATION OF MODIFIED BERNOULLI EQUATION WITH VISCOUS EFFECTS AND TERMINAL V...Wasswaderrick3
In this book, we use conservation of energy techniques on a fluid element to derive the Modified Bernoulli equation of flow with viscous or friction effects. We derive the general equation of flow/ velocity and then from this we derive the Pouiselle flow equation, the transition flow equation and the turbulent flow equation. In the situations where there are no viscous effects , the equation reduces to the Bernoulli equation. From experimental results, we are able to include other terms in the Bernoulli equation. We also look at cases where pressure gradients exist. We use the Modified Bernoulli equation to derive equations of flow rate for pipes of different cross sectional areas connected together. We also extend our techniques of energy conservation to a sphere falling in a viscous medium under the effect of gravity. We demonstrate Stokes equation of terminal velocity and turbulent flow equation. We look at a way of calculating the time taken for a body to fall in a viscous medium. We also look at the general equation of terminal velocity.
1. TEST I. PRE-ASSESSMENT:
2. Which of the following is not included in the main classes of biomolecules?
A. carbohydrates
B. nucleic acids
C. lipids
D. phosphates
3. What do you call the long chain of molecules which may consist of similar building blocks or repeated
patterns of molecules?
A. molecules B. monomers C. polygons D. polymers
4. Which of the following statements is not true about monomers?
A. These can be composed of more than one atom.
B. These exhibit patterns that are repeated.
C. These are single basic building unit of all organic compounds.
2. What class of biomolecules do DNA and RNA belong?
A. carbohydrates
B. nucleic acids
C. lipids
D. proteins
3.. Sugar, starch, cellulose and glucose are examples of what class of biomolecules?
A. carbohydrates
B. nucleic acids
C. lipids
D. proteins
4. What class of biomolecule does the structure represent in Figure 1?
A. carbohydrates B. lipids C. nucleic acids D. proteins
5. These are large molecules composed of thousands of covalently connected atoms which comprise the
main classes of biomolecules.
2. A. macromolecules
B. micromolecules
C. minimolecules
D. monomolecules
TEST II. Fill in the missing parts!
1. ELEMENTS
PRESENT
MONOMER EXAMPLES USES
CARBOHYDRATES 2. 3. glucose,
fructose,
starch,
glycogen,
cellulose
energy storage;
structure
4. carbon, hydrogen,
oxygen, nitrogen,
sulfur
5. 6-7.
( 2 examples)
Storage; signals;
structural; defensive;
catalyst; transport;
receptors
NUCLEIC ACIDS 8. Nucleotides 9. 10.
LIPIDS 11. 12. 13. 14.
