QUESTION 10 How many redox reactions are in the Krebs cycle, not including the p

Question

QUESTION 10
How many redox reactions are in the Krebs cycle, not including the preparatory step?
A. One
B. Two
C. Three
D. Four
E. Five

QUESTION 11
What ultimately happens to all of the carbon that is found in pyruvate at the end of glycolysis?
A. Each carbon atom is eventually combined to oxygen and lost as carbon dioxide
B. It is broken down into smaller and smaller pieces and excreted as urea
C. It is burned off as energy is used
D. It depends on whether or not the metabolic pathway continues to the Kreb’s cycle or moves to fermentation
E. It is used in small pieces and combined with the other sugars in the Kreb’s cycle

QUESTION 12
The electron transport chain is a major part of oxidative phosphorylation, but it is not directly responsible for synthesizing ATP. Which of the following statements is most accurate about making ATP?
A. Electrons are transferred down a hill to oxygen directly making ATP
B. Any charged molecule can receive electrons at the end of the transport chain
C. A terminal electron acceptor uses acetyl CoA and electrons to build up ATP
D. Electron transport jumpstarts fermentation which makes ATP
E. ATP synthase spins as a result of H+ ions falling down their concentration gradient

QUESTION 13
The pentose phosphate pathway and the Entner-Dourohoff pathway are possible alternatives to which metabolic path?
A. Oxidative phosphorylation
B. The electron transport chain
C. Beta-oxidation of lipids
D. Glycolysis
E. Kreb's Cycle

QUESTION 14
Anaerobic respiration
A. Uses terminal electron acceptors other than oxygen
B. May create byproducts like hydrogen sulfide and nitrogen gas
C. Creates less energy than aerobic respiration
D. All of the above
E. None of the above

QUESTION 15
The primary benefit of fermentation is the regeneration of coenzymes needed by glycolysis
A. True
B. False

QUESTION 16
The use of enzymes is necessary to increase the activation energy of a chemical reaction.
A. True
B. False

QUESTION 17
ATP is an unstable molecule which is why it is said to have high energy bonds.
A. True
B. False

Explanation / Answer

10- c. Three

11- d.....

12- c....

13-

14- d. All of the above

15- a. True

16- a. True

17- a. True

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