The average diameter of red blood corpuscles of man is

• 7.2 µm

• 8.1 µm

• 9.2 µm

• 10.3 m

2.

FAD is electron acceptor during oxidation of which of the following

• ketoglutarate ➔ Succinyl Co-A

• Succinic acid➔ Fumaric acid

• Succinyl Co-A ➔ Succinic acid

• Fumaric acid ➔ Malic acid

The chemical nature of hormones secreted by $\alpha$ and $\beta$ cells of pancreas is

• glycolipid

• glycoprotein

• steroid

• polypeptide

How many ATP molecules are obtained from fermentation of 1 molecule of glucose

• 2 

• 4

• 3

• 5

In which stage of cell division chromosomes are most condensed

• Prophase

• Metaphase

• Anaphase

• Telophase

Which one is product of aerobic respiration

• Malic acid 

• Ethyl alcohol

• Lactic acid

• Pyruvic acid

CO₂ acceptor in C₃ cycle is

• OAA

• RuBP

• PEP

• Malic acid

Virus was discovered by whom

• Stanley

• Ivanowski

• Herelle

• Beijerinck

Electron microscope is based on the principle of

• electromagnetic theory

• resolution of glass lenses

• magnification of glass lenses

• refraction of light

Citric acid cycle is the alternate name of which of the following

• HMP shunt

• Glycolysis

• TCA cycle

• Calvin cycle