Question

1. For each glucose molecule that is oxidised in aerobic respiration approximately how many molecules of ATP are produced?

2. Which of the following is a product of aerobic respiration in a yeast cell?

a. ADP.

b. ATP.

c. cytochrome c.

d. ethanol.

e. NADPH.

3. The energy necessary to produce ATP during oxidative phosphorylation is provided by which of the following?

a. the phosphorylation of cytochrome c.

b. GTP produced during the citric acid cycle.

c. lactic acid metabolism. 4. the release of CO2 from the mitochondria.

d. the potential energy of the proton gradient.

Answer 1

The answer to first question is

For each glucose molecule that is oxidised in aerobic respiration approximately 36 or 38 molecules of ATP are produced.

Total molecules of ATP produced is usually 38 but 2 molecules of ATP is required for transfer of 2 molecules of NADH produced in glycolysis into mitochrondria. Thus Net gain ATP molecules are 36 ATP molecules.

38 ATP molecules are produced this way-

Glycolysis- 8 ATP molecules are produced.

In conversion of pyruvic acid to acetyl CO-A - 6 ATP molecules are produced.

In Kreb cycle -   24 ATP molecules are produced

Total - 38 ATP MOLECULES Are produced.

The answer to second question is -

b ATP.

Explanation-

Aerobic and anaerobic repiration occurs in Yeast.

In presence of Oxygen, i.e in aerobic respiration -CO2 and water is produced with 38 ATP molecules during oxidation of glucosse.

In absence of Oxygen , in anaerobic respiration - CO2 , ethanol and 2 molecules of ATP are produced.

Thus, one of the product in aerobic respiration is ATP in yeasts.

The answer to third question is-

d. The potential energy of proton gradient.

Synthesis of ATP molecules occurs in F0 - F1particle of inner membrane particles of mitochondrian. PROTONS are present across the membrane, the site of synthesis of ATP is coupled with passage of protons across the membrane.