Bis 2a midterm 2 - Study guides, Class notes & Summaries
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BIS 2A MIDTERM 2|50 Questions With Complete Solutions
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On early Earth, the first things that looked like they might be classified as living organisms used iron sulfur clusters as catalysts. If these "naked" iron sulfur clusters can catalyze reactions, why do our cells instead use proteins carrying iron sulfur clusters as catalysts? 
a. To decrease substrate specificity 
b. To increase substrate specificity 
c. To prevent spontaneous oxidation of the iron in the cluster 
d. a and c 
e. b and c - ️️e. b and c 
 
Two tabby (striped) cats are bred...
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Bis 2A Midterm 242 Review Study Questions And Answers
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What does a protein do to be able to react with other molecules? - ️️produced as a linear stretch but folded up to be able to react 
 
What are catalysts made of? - ️️proteins plus other small molecules 
 
Why does life use a catalyst for every reaction? - ️️A. make it go faster 
B. emphasize the rare useful reactions and avoid toxic alternatives 
C. to optimize rates for current conditions 
D. to allow species to compete with other species by employing a specialized lifestyle 
 
Wha...
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BIS 2A Midterm 2|87 Questions with 100% Correct Answers | Updated | Guaranteed A+
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1. A couple who are both carriers for the gene for cystic fibrosis have two children who have cystic fibrosis. What is the probability that their next child will have cystic fibrosis? (Assume parents are heterozygous) 
a) 0% 
b) 25% 
c) 50% 
d) 75% 
e) 100% - ️️b) 25% 
 
2. In crossing a homozygous recessive with a heterozygote, what is the chance of 
getting an offspring with the homozygote recessive phenotype? 
a) 0% 
b) 25% 
c) 50% 
d) 75% 
e) 100% - ️️c) 50% 
 
3. In snapdragons,...
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BIS 2A Midterm 2|89 Questions And Answers|100% Correct
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What are proteins made of? - ️️Proteins are made up of amino acids linked together by peptide bonds, as well as the R groups attached to the amino acids (which make them unique and give certain characteristics) 
 
Proteins are formed through the process of condensation, when the carboxylic group and the amine group of the amino acids bind together to produce water, forming a peptide bond. 
 
How the various levels of organization (primary, secondary...) affect the structure and activity of a...
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BIS 2A MIDTERM 2 2023/2024
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BIS 2A MIDTERM 2 2023/2024 
On early Earth, the first things that looked like they might be classified as living 
organisms used iron sulfur clusters as catalysts. If these "naked" iron sulfur clusters can 
catalyze reactions, why do our cells instead use proteins carrying iron sulfur clusters as 
catalysts? 
a. To decrease substrate specificity 
b. To increase substrate specificity 
c. To prevent spontaneous oxidation of the iron in the cluster 
d. a and c 
e. b and c - CORRECT ANSWER-e. ...
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Britt Bis 2A Midterm 2 study guide DUE 9 OCTOBER 2023
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Britt Bis 2A Midterm 2 study guide 
DUE 9 OCTOBER 2023 
1. A protein's tertiary structure is stabilized by... 
a. Hydrophobic R groups 
b. Ionic bonds 
c. Phosphodiester bonds 
d. Hydrogen bonds 
e. a, b, and d -CORRECT ANSWER- e. a, b, and d 
In animals, if the fuel consumed exceeds energy expended, fats are synthesized from 
carbohydrates in order to store the excess energy. Acetyl-coA Carboxylase catalyzes 
the first dedicated step in fatty acid synthesis. This enzyme responds to a larg...
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BIS 2A Midterm 112 Question With Verified Answers
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Amino acids in a protein chain are attached by bonds called ____________. - ️️Peptide Bond 
 
Where do peptide bonds form? - ️️Between the carboxyl group of one amino acid and the amino group of another amino acid. 
 
What changes when a protein denatures? - ️️Three dimensional structure 
 
The peptide bond that forms between two amino acids is an example of a - ️️Covalent Bond 
 
Which cell makes up the bulk of the cell membrane? - ️️phospholipids 
 
Which lipid provides a w...
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BIS 2A midterm 62 Questions With Correctly Solved Answers
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What is the difference between channel proteins and carrier proteins? - ️️While they are both transport proteins active in facilitated diffusion, channel proteins are always open and work faster than carriers. While carrier proteins bind to a substance and change shape for that substance to pass through. 
 
What is Tonicity? - ️️The ability of an extra cellular solution to change in volume by affecting osmosis. 
 
What is osmoregulation? - ️️Mechanism of controlling the affects of os...
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BIS 2A Midterm 1 Britt
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BIS 2A Midterm 1 Britt 
Which of the following statements best describes covalent bonds? - CORRECT 
ANSWER-the sharing of an electron pair between atoms; relatively strong bond 
Which of the carbon atoms is most oxidized? - CORRECT ANSWER-CO2 
How can living things grow and display increasing levels of order, reorganizing random 
molecules into complex organized molecules? - CORRECT ANSWER-living things 
capture the energy from their environment, like nearby exergonic reactions, and use 
tha...
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BIS 2A Lecture Notes (Midterm 2 Material)
- Class notes • 13 pages • 2023
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BIS 2A lecture notes fall quarter. This document covers materials included in midterm 2.
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