BIO 2A03 - ANIMAL PHYSIOLOGY - MIDTERM 1 Questions with Correct Solutions

BIO 2A03 - ANIMAL PHYSIOLOGY - MIDTERM 1 Questions with
Correct Solutions

Question:
1. Rates of enzyme reactions depend on

Answer:
1) Concentrations of [S] and [P]
2) enzyme activity
3) Enzyme concentrations
4) Affinity of the enzyme for its substrate
5) temperature, pH, other physical factors


Question:
2. enzyme activity

Answer:
K cat


Question:
3. enzyme reaction rate equation

Answer:




Question:
4. Enzyme reaction rates can be regulated by

Answer:
1) allosteric modulation
2) covalent modification


Question:
5. Allosteric modulation

Answer:
(not a chemical bond) - induces conformational change that changes enzyme activity


Question:
6. covalent modulation

, Answer:
addition of a chemical group to an enzyme that causes altered activity
- usually catalyzed by other enzymes
- ex: phosphorylation


Question:
7. energy metabolism

Answer:
pathways needed to convert energy in food to ATP


Question:
8. two processes supporting ATP production

Answer:
1) substrate level phosphorylation - (absence of O2 - glycolysis)
2) oxidative phosphorylation (presence of O2 - in mitochondria


Question:
9. by product of ATP synthesis and hydrolysis

Answer:
heat


Question:
10. glycolysis provides how many ATP and NADH molecules?

Answer:
2, 2


Question:
11. 1 glucose =

Answer:
2 molecules of pyruvate


Question:
12. glycolysis occurs in the?

Answer:
Cytosol


Question:
13. in order for pyruvate to enter the Krebs cycle it must be converted into what in what step?