Agricultural Biotechnology MCQs

Question 1

Alcohol dehydrogenase enzyme belongs to

Accepted Answer

Oxidoreductase

Answer

Hydrolase

Answer

Lyase

Answer

Transferase

Question 2

The amino acid having sulphur is

Accepted Answer

Both A and B

Answer

Met

Answer

Cys

Answer

Ser

Question 3

Bohr effect means

Accepted Answer

The effect of pH on oxygen affinity of haemoglobin

Answer

The effect of temperature on oxygen affinity of haemoglobin

Answer

The effect of carbon monoxide on oxygen affinity of haemoglobin

Answer

All of the above

Question 4

Lac operon is

Accepted Answer

Inducible

Answer

Repressible

Answer

Constitutive

Answer

None of the above

Question 5

The prokaryotic promoter at - 10 region is

Accepted Answer

Pribnow box

Answer

Hogness box

Answer

CAAT box

Answer

None of the above

Question 6

In purine ring sixth carbon comes from

Accepted Answer

Carbon dioxide

Answer

Carbamoyl phosphate

Answer

Aspartate

Answer

Glutamine

Question 7

The most commonly used cryoprotectant in

Accepted Answer

DMSO

Answer

PVP

Answer

PEG

Answer

All of the above

Question 8

Which gives pinkish red colour to the nodules?

Accepted Answer

Leghemoglobin

Answer

Nitrogenase

Answer

Nitrite reductase

Answer

All of the above

Question 9

Hydrolysis product of lactose is

Accepted Answer

Glucose and galactose

Answer

Two molecules of glucose

Answer

Glucose and fructose

Answer

Two molecules of α glucose and β glucose