In aerobic cellular respiration, maximum number of ATP molecules is produced during?
1. Glycolysis
2. Oxidation of pyruvate
3. Kreb’s cycle
4. Chemiosmosis

Consider the two given statements:
I. Glycolysis is thought to be one of the most ancient of metabolic processes.
II. Glycolysis neither uses nor needs O2.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect

The number of substrate level of phosphorylations in one turn of citric acid cycle is:

The mitochondrial electron transport chain is located in:
1. The outer membrane
2. The inner membrane
3. The inter-membrane space
4. Stroma

The products of three turns of Kreb’s cycle will be:
1. 1 ATP, 2 CO₂, 3 NADH, and 1 FADH₂
2. 3 ATP, 3 CO₂, 3 NADH, and 3 FADH₂
3. 3 ATP, 6 CO₂, 9 NADH, and 3 FADH₂
4. 38 ATP, 6 CO₂, 3 NADH, and 12 FADH₂

In β-oxidation:

Pyruvate enters the mitochondrion by:
1. Active transport
2. Facilitated diffusion
3. Diffusion
4. Through a channel

What percent of ATP produced during glycolysis are the result of substrate level phosphorylation?
1. 0
2. 25
3. 50
4. 100

In aerobic cellular respiration, oxygen is actually directly used only by:
1. Glycolysis
2. Oxidation of pyruvate
3. Kreb’s cycle
4. Electron transport

Consider the following two statements: