By the end of glycolysis, most of the original energy in the glucose molecule is:
1. utilized to form ATP.
2. retained in the pyruvate.
3. stored in the NADH produced.
4. lost as heat.

Krebs cycle is also called as:

Only two molecules of NADH are formed during glycolysis because:

The ʺnetʺ products of glycolysis are:
1. $2{\mathrm{NAD}}^{+}$, $2{\mathrm{H}}^{+}$, 2 pyruvate, 2 ATP, and $2{\mathrm{H}}_2\mathrm{O}$.
2. $6{\mathrm{CO}}_2$, $6{\mathrm{H}}_2\mathrm{O}$, 2 ATP, and 2 pyruvate
3. $2{\mathrm{FADH}}_2$, 2 pyruvate, 4 ATP, and $2{\mathrm{H}}_2\mathrm{O}$.
4.2 NADH, $2{\mathrm{H}}^{+}$, 2 pyruvate, 2 ATP, and $2{\mathrm{H}}_2\mathrm{O}$.

Glycolysis will be most adversely affected by a toxin:

Consider the latter half of glycolytic pathway given below:

In reaction 6
I. The enzyme involved is an oxidoreductase
II. Arsenate may uncouple the pathway at this stage
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false

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: