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BIO 114 Exam 2; Questions & Answers 100% Verified Metabolism Correct answer-Biological Chemical reactions. The totality of an organism's chemical reaction. The Concept of Free Energy Correct answer-Free energy is the portion of a system's energy that can perform work when the temperature a...

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  • August 9, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • bio 114 exam 2 questions answers 100 verified
  • metabolism correct answer biological chemical re

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BIO 114 Exam 2; Questions & Answers 100%
Verified
Metabolism Correct answer-Biological Chemical reactions. The totality of an organism's
chemical reaction.




The Concept of Free Energy Correct answer-Free energy is the portion of a system's
energy that can perform work when the temperature and pressure are uniform throughout the
system, as in a living cell.




∆G Correct answer-the change in free energy. We can use it to predict whether the
process will be spontaneous.




Exergonic Correct answer-"energy outward" An ergonomic reaction proceeds with a net
release of free energy. ∆G is negative, these occur spontaneously.




Endergonic Correct answer-A reaction that absorbs free energy from its surroundings.
This type of reaction stores energy in molecules. ∆G is positive, these are nonspontaenous.




Enzymes Correct answer-Macromolecules that act like a catalyst in order to speed of the
rate of a reaction without being consumed by the reaction.




What happens without enzymes? Correct answer-metabolic pathways would become
clustered.

, BIO 114 Exam 2; Questions & Answers 100%
Verified
Activation Energy Correct answer-The amount of energy needed to start a reaction.




How is activation energy supplied? Correct answer-In the form of heat.




How does activation energy relate to the role of enzymes? Correct answer-Activation
energy provides a barrier that determines the rate of the reaction.




How do cells get the necessary energy to drive non spontaneous reactions? Correct
answer-An example would be plants get the required energy from the environment around
them like the sun and turning it into chemical reaction. Next is a series of exergonic steps to
form a glucose modle.




How do enzymes lower E_a? Correct answer-By making it possible for a cell to have a
dynamic metabolism, routing chemicals smoothly through cells metabolic pathways. They also
determine which chemical processes will be going on in a cell.




How do enzymes function? Correct answer-They bind to a substrate forming an enzyme
substrate complex.




What factors influence enzyme activity? Correct answer-Environmental conditions,
cofactors, and enzyme inhibitors

, BIO 114 Exam 2; Questions & Answers 100%
Verified
Competitive Inhibitors: Correct answer-Reduces the productivity go enzymes by blocking
substrates from entering active sites.




Non-competitive Inhibitors: Correct answer-These do not directly compete with the
substrate to bing to the enzyme at the active site. This inhibitor causes enzymes to change
shape.




Allosteric Regulation: Correct answer-Describes any cause in which a protein's function at
one site is affected by the binding of a molecule to a separate site.




Positive Allosteric Regulation: Correct answer-Binding of an activator to a regulatory site
which stabilizes the shape that has functional active sites.




Negative Allosteric Regulation: Correct answer-Binding of an inhibitor, which stabilizes
the inactive form of the enzyme.




Feedback Inhibition: Correct answer-When ATP inhibits an enzyme in and ATP generating
pathway the result is feedback inhibition.




What is feedback inhibition. common control of? Correct answer-Metabolic control

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