EXAM: Questions and Answers
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What is the measure of heat content in a reaction? - correct answer-ΔH
= enthalpy
What is the measure of order of the system in a reaction? - correct
answer-ΔS = entropy
A fibrous protein is an example of a protein ___. - correct answer-
conformation
What is an example of protein conformation? - correct answer-fibrous
and globular
,Any molecule or ion that is necessary for an enzyme's function is called:
- correct answer-cofactor
In a particular cell, molecules X binds to an enzyme causing to stop
catalyzing reactions. Molecule X is called what? - correct answer-
inhibitor
What is the function of lipids in cells? - correct answer-1. energy
source/storage
2. structural role in membranes (myelin sheaths)
3. vitamins
4. basis for dye molecules (carotenoids)
What is the function of carbohydrates in cells? - correct answer-1.
structural role in DNA and RNA
2. intermediate in metabolism
3. energy source for cells
, In a particular cell, molecule X binds near the active site on an enzyme
causing it to slow catalyzing reactions. Molecules X is called what? -
correct answer-uncompetitive inhibitor
In a particular cell, molecule X binds to an enzyme at the active site
causing it to stop catalyzing reactions. Molecules X is called what? -
correct answer-competitive inhibitor
A particular lipid is solid at room temperature, so it is called: - correct
answer-fat
A particular lipid is liquid at room temperature, so it is called: - correct
answer-oil
What is the difference between saturated and unsaturated fatty acids? -
correct answer-saturated fatty acid = no double bonds
unsaturated fatty acid = double bonds