Physiology and Metabolism MCQs

Question 1

In E. coli, the respiratory chain components are located in the

Accepted Answer

Cytoplasmic membrane

Answer

Plasmids

Answer

Cytosol

Answer

Mitochondrial membrane

Question 2

The reduction phase of Calvin-Benson cycle in Arabidpsis is inhibited. This can be attributed to the inactivation of

Accepted Answer

3-phosphoglycerate kinase

Answer

Aldolase

Answer

Triose phosphate isomerase

Answer

Fructose-16, -bisphssphatase

Question 3

Pyruvic acid acts as

Accepted Answer

Hydrogen accepter in fermentation and intermediate substrate in aerobic respiration

Answer

Hydrogen accepter in aerobic respiration

Answer

Intermediate substrate in aerobic respiration

Answer

Electron accepter

Question 4

During mixed acid fermentation by E. coli, which one of the following is not produced?

Accepted Answer

Citric acid

Answer

Lactic acid

Answer

Ethanol

Answer

Succinic acid

Question 5

The number of ATP produced when a molecule of glucose undergoes fermentation

Accepted Answer

2

Answer

4

Answer

36

Answer

38

Question 6

Photosynthetic pigments is chloroplasts are embedded in the membrane of

Accepted Answer

Thylakoids

Answer

Matrix

Answer

Photoglobin

Answer

Chloroplast

Question 7

Which of the following reactions is suggestive of oxidative decarboxylation?

Accepted Answer

Conversion of α-ketoglutarate to succinyl co-A

Answer

Conversion of oxalosuccinate to α-ketoglutarate

Answer

Conversion of isocitrate to oxalosuccinate

Answer

Conversion of succinate to fumerate

Question 8

Photosynthesis is a process of converting

Accepted Answer

Electromagnetic energy into chemical energy

Answer

Heat energy into chemical energy

Answer

Light energy into heat energy

Answer

Light energy into mechanical energy

Question 9

Anoxic earth become oxygenated due to oxygenic photosynthesis by

Accepted Answer

Cyanobacteria

Answer

Angiosperms

Answer

Gymnosperms

Answer

Archaea