UNCW Bio 201 Exam 2- Chapters 5, 6, and 7 Questions and Answers
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Course
BIO 201
Institution
BIO 201
Equation of how Enzymes function in reaction Substrate(s) + Enzyme = Product(s) + Enzyme
What is the optimal temperature for most enzymes to work at? 37 degrees Celsius
What happens when temperature is too high for an enzyme? Enzymes can unfold and lose their 3D shape.
What pH do cytosolic enzym...
UNCW Bio 201 Exam 2- Chapters 5, 6,
and 7 Questions and Answers
Equation of how Enzymes function in reaction ✅Substrate(s) + Enzyme = Product(s) +
Enzyme
What is the optimal temperature for most enzymes to work at? ✅37 degrees Celsius
What happens when temperature is too high for an enzyme? ✅Enzymes can unfold
and lose their 3D shape.
What pH do cytosolic enzymes operate best at? ✅neutral, around 7.2. (the pH of
human cells)
How can competitive inhibition be overcome? ✅increasing substrate concentration
What direction does actin spin when ATP is being produced? ✅Clockwise
What direction does actin spin when ATP is being hydrolyzed? ✅Counterclockwise
A reaction that has a positive ΔG is described as... ✅Endergonic
If products have less free energy than the reactants, meaning ΔG is negative, the
reaction is described as... ✅Exergonic
an exergonic reaction is... (spontaneous/not spontaneous) ✅Spontaneous
An endergonic reaction is... (spontaneous/not spontaneous) ✅Not spontaneous
Altering the three-dimensional structure of an enzyme might... ✅prevent the substrate
from binding the enzyme's active site.
What is the role of ubiquitin? ✅Ubiquitin tags proteins for degradation
What is the role of the proteasome? ✅Cylinder shaped; breaks down and recycles
proteins.
Role of Catabolic Pathways ✅Breakdown cellular components; Exergonic
Role of anabolic pathways ✅Synthesis of cellular components; Endergonic. MUST BE
COUPLED WITH EXERGONIC REACTION!
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