1. If there were 4 molecules of glucose, how many ATPs would you expect to be pr
ID: 3512007 • Letter: 1
Question
1. If there were 4 molecules of glucose, how many ATPs would you expect to be produced through the krebs cycle.
a) 136-138 b) 8-10 c) 400 d) 25 e) 98
2. oxygen is needed in
a) glycolsis b) krebs cycle c) electron transport system d) chemiosmosis
3. which of the following best characterize the 1st 3 stages in glycolysis? a) the double phosphorylation of fructose followed by the splitting of fructose into 3 carbon compunds and then oxidation of NAD +. b) depending upon the availability of O2 the production of glucose 6 phosphate, its conversion to fructose and finally to pyruvic acid. c) The addition of a phosphate to glucose to form glucose 6 phosphate, its conversion to fructose, and the addition of another phosphate group to fructose. d) there is not set standard involved in glycolysis as it depends upon the availability of O2
4. Acetyl co A
a) forms as a result of the breakdown of pyruvic acid in the krebs cycle b) formed in the transitional step between glycolsis and the krebs cycle c) is not important in cell respiration d) is transported in the bloodstream
5. In glycolsis, the oxidation of one glucose molecule produces
a) 2 pyruvic acids b) loss of 2 CO2 c) 2 FADH d) all of the above
6. The krebs cycle
a) results from the combination of oxaloacetic acid and the acetyl group of acetyl co A b) another name for the citric acid cycle c) produces 2 ATPs, 4 CO2, 6NADH, 2 FADH d) turns 2 times per one glucose molecule e) none are correct f) all of the above are correct
7. IN redox reactions
a) a molecule is oxidized, it loses H atoms b) a molecule is oxidized, it gains H atoms c) a molecule is reduced, it loses H atoms d) none of the above
8. The ETS
a)contains cytochromes that carry electrons into intermembrane space of the mitochondria b) is located in the cristae c) carries out redox reactions d) all of the above are correct e) none of the above are correct
9. The proton pump that expels H+ from the matrix of the mitochondria into the intermembrane space and helps to create an electrochemical gradient of H+ in the intermembrane space occurs through
a) the cytochromes b) ATPase c) pyruvates d) none of the above
10. During aerobic respiration, how many ATPS can be made from 1 glucose molecule
a) 3 b) 38 c) 2 d) 12
Explanation / Answer
1.
Accroding to old concept
1 NADH = 3 ATP,
1 FADH2 = 2 ATP.
During kerbs cycle from one pyruvic acid, it prodcues 4 NADH, 1 FADH2 and 1ATP moleucels. So, the total number of ATP molecules from one pyruvic acid = 15.
From 4 molecules of glucsoe = 8 *15 = 120.
Accroding to new concept
1 NADH = 2.5 ATP,
1 FADH2 = 1.5 ATP.
During kerbs cycle from one pyruvic acid, it prodcues 4 NADH, 1 FADH2 and 1ATP moleucels. So, the total number of ATP molecules from one pyruvic acid = 12.5.
From 4 molecules of glucsoe = 8 *12.5 = 100.
The answer is e. 98.
2. oxygen is needed in
The answer is c) electron transport system.
Oxygen acts as a final electron acceptor.
3. which of the following best characterize the 1st 3 stages in glycolysis?
The answer is c) The addition of a phosphate to glucose to form glucose 6 phosphate, its conversion to fructose, and the addition of another phosphate group to fructose.
4. Acetyl co A
The answer is b) formed in the transitional step between glycolsis and the krebs cycle
5. In glycolsis, the oxidation of one glucose molecule produces
The answer is a) 2 pyruvic acids
ACCORDING TO CHEGG GUIDELINES WE HAVE TO ANSWER ONE QUESTION AT A TIME. POST THE REST AS SPERATE QUESTIONS, THEN I CAN HELP YOU.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.