AP Bio chapter 9 questions

Starting with one molecule of isocitrate and ending with fumarate, what is the maximum number of ATP molecules that could be made through substrate-level phosphorylation

1

How many molecules of carbon dioxide (CO2) would be produced by five turns of the citric acid cycle

10

Starting with one molecule of citrate and ending with oxaloacetate, how many ATP molecules can be formed from oxidative phosphorylation (chemiosmosis)

11

For each molecule of glucose that is metabolized by glycolysis and the citric acid cycle, what is the total number of NADH+FADH2 molecules produced

12

How many molecules of carbon dioxide (CO2) would be released from the complete aerobic respiration of a molecule of sucrose (C12H22O11), a disaccharide

12

How many ATP molecules could be made through substrate-level phosphorylation plus oxidative phosphorylation (chemiosmosis) if you started with three molecules of succinyl CoA and ended with oxaloacetate

18

In glycolysis, for each molecule of glucose oxidized to pyruvate

2 molecules of ATP are used and 4 molecules of ATP are produced

Assume a mitochondrial contains 58 NADH and 19 FADH2. If each of the 77 dinucleotides were used, approximately how many ATP molecules could be generated as a result of oxidative phosphorylation (chemiosmosis)

212

Starting with citrate, how many of the following would be produced with three turns of the citric acid cycle

3 ATP, 6 CO2, 9 NADH, and 3 FADH2

How many reduced dinucleotides would be produced with four turns of the citric acid cycle

4 FADH2 and 12 NADH

Approximately what percentage of the energy of glucose (C6H12O6) is transferred to storage in ATP as a result of the complete oxidation of glucose to CO2 and water in cellular respiration

40%

Each time a molecule of glucose (C6H12O6) is completely oxidized via aerobic respiration, how many oxygen molecules (O2) are required

6

Approximately how many molecules of ATP are produced from the complete oxidation of two molecules of glucose (C6H12O6) in cellular respiration

76

Which step consists of a phosphorylation reaction in which ATP is the phosphate source

A

Which step involves an endergonic reaction

A

Carbon skeletons for amino acid biosynthesis are supplied by intermediates for the citric acid cycle. Which intermediate would supply the carbon skeleton for synthesis of a five-carbon amino acid

Alpha-ketoglutarate

Which step shows a split of one molecule into two smaller molecules

B

In which reaction does an intermediate pathway become oxidized

C

In which step is an organic phosphate added to the reactant

C

Which of the following statements describes the result of this reaction (C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O + Energy)

C6H12O6 is oxidized and O2 is reduced

Cells do not catabolize carbon dioxide because

CO2 is already completely oxidized

Most of the energy that enters electron transport enters as

FADH2 and NADH

Pyruvate is formed

In the cytosol

Carbon dioxide (CO2) is released during which of the following stages of cellular respiration

Oxidation of pyruvate to acetyl CoA and the citric acid cycle

In mitochondria, exergonic redox reactions

Provide the energy to establish the proton gradient