111.

How many ATP are formed by oxidation of one glucose molecular in liver cells ?

• 36

• 38

• 2

• 8

Glycolysis occurs in :

• cytoplasm

• nucleus

• mitochondria

• both 'a' and 'c

The presence of arginase confirms that :

• urea cycle is operating

• urea cycle may be operating

• arginine is being converted into ornithine

• arginine is being converted into citrulline

Glycolysis is found in cytoplasm of virtually all types of aerobic/ anaerobic cells. In this process glucose is converted into

• PEP

• acetyl CoA

• pyruvic acid

• citric acid

In which of the following steps of citric acid cycle, CO₂ is evolved?

I. Citric acid – Ketoglutaric acid 

II. Succinic acid – Malic acid 

III. Malic acid – Oxaloacetic acid 

IV. $\mathrm{\alpha }$-ketoglutaric acid – Succinyl CoA

• I and II only

• I and IV only

• II and III only

• II and IV only

• II and IV only

Oxidative decarboxylation of pyruvic acid results in the formation of

I. Acetyl CoA 

II. CO₂ 

III. ATP

IV. NADH + H⁺

• I only

• I and II only

• I, II and III only

• I, II and IV only

• I, II and IV only

Select the correct order of reactions in glycolysis

(A) Conversion of 3-phosphoglyceraldehyde to 1,3-bisphosphoglycerate

(B) Conversion of 3-phosphoglyceric acid to 2- phosphoglycerate 

(C) Conversion of BPGA to 3 phosphoglyceric acid 

(D) Splitting of fructose 1, 6 bisphosphate into dihydroxy acetone phosphate and 3-phosphoglyceraldehyde

• (D), (C), (A), (B)

• (B), (C), (A), (B)

• (B), (D), (C), (A)

• (A), (D),(C), (B)

• (A), (D),(C), (B)

FAD is electron acceptor in the citric acid cycle during the oxidation of

• Malic acid to oxaloacetic acid

• Succinic acid to malic acid

• Citric acid to alpha-ketoglutaric acid

• Alpha-ketoglutaric acid to succinic acid

• Alpha-ketoglutaric acid to succinic acid

In which one of the following reactions of glycolysis, oxidation takes place?

• Glucose 6-phosphate to fructose 6-phosphate

• Fructose 6-phosphate to fructose 1, 6-bisphosphate

• 1, 3-bisphosphoglycerate to 3-phosphogyceric acid

• 3-phosphoglyceraldehyde to 1, 3-bisphosphoglycerate

• 3-phosphoglyceraldehyde to 1, 3-bisphosphoglycerate

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by

• Hexokinase

• Enolase

• Phosphofructokinase

• Aldolase