Consider the latter half of glycolytic pathway given below:

Regarding reaction 7:
I. Glycolysis has reached the break-even point.
II. When the cell has plenty of ATP (and little ADP), this reaction does not occur.
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false

Refer to the schematic diagram of Krebs citric acid cycle given below:

How many of the enzymes involved in the pathway are dehydrogenases?
  
1. 2
2. 3
3. 4
4. 5

Refer to the given schematic diagram of Krebs cycle :

The step where substrate level phosphorylation takes place is catalyzed by the enzyme:
1. Aconitase
2. Isocitrate dehydrogenase
3. Succinyl-CoA synthetase
4. Succinate dehydrogenase

When pyruvic acid is converted to acetyl CoA, the former is:

A five carbon amino acid can be formed by which of the following intermediates of Krebs cycle?

The number of molecules of carbon dioxide produced by three turns of the Krebs cycle would be:

What is the total number of NADH and ${\mathrm{FADH}}_2$ molecules produced for each molecule of glucose metabolized by glycolysis and the citric acid cycle?

The correct sequence of electron flow during aerobic respiration would be:
1. food → Krebs cycle → ATP → NAD⁺
2. food → NADH → electron transport chain → oxygen
3. glucose → pyruvate → ATP → oxygen
4. glucose → ATP → electron transport chain → NADH

The components of the mitochondrial electron transport chain are located:
1. in mitochondrial matrix
2. in outer mitochondrial membrane
3. in inner mitochondrial membrane
4. in intermembrane space

The correct sequence of flow of electrons downhill in the mitochondrial electron transport chain would be:
1. ubiquinone, cytochromes, FMN, Fe-S
2. cytochromes, FMN, ubiquinone, Fe-S
3. Fe-S, FMN, cytochromes, ubiquinone
4. FMN, Fe-S, ubiquinone, cytochromes