Chapter 12: Biotechnology and Its Applications

Bt cotton is not:

a. A GM plant

b. Insect-resistant

c. A bacterial gene expressing system

d. Resistant to all pesticides

C-peptide of human insulin is:

a. A part of mature insulin molecule

b. Responsible for the formation of disulphide bridges

c. Removed during maturation of pro-insulin to insulin

d. Responsible for its biological activity

GEAC stands for:

a. Genome Engineering Action Committee

b. Ground Environment Action Committee

c. Genetic Engineering Approval Committee

d. Genetic and Environment Approval Committee

α -1 antitrypsin is:

a. An antacid

b. An enzyme

c. Used to treat arthritis

d. Used to treat emphysema

A probe which is a molecule used to locate homologous sequences in a mixture of DNA or RNA molecules, could be:

a. An ssRNA

b. An ssDNA

c. Either RNA or DNA

d. Can be ssDNA but not ssRNA

Choose the correct option regarding Retrovirus:

a. An RNA virus that synthesises DNA during infection

b. A DNA virus that synthesises RNA during infection

c. An ssDNA virus

d. A dsRNA virus

The site of production of ADA in the body is:

a. Erythrocytes

b. Lymphocytes

c. Blood plasma

d. Osteocytes

A protoxin is:

a. A primitive toxin

b. A denatured toxin

c. The toxin produced by protozoa

d. Inactive toxin

Pathophysiology is the:

a. Study of physiology of pathogen

b. Study of the normal physiology of host

c. Study of altered physiology of host

d. None of the above

The trigger for activation of the toxin of Bacillus thuringiensis is:

a. Acidic pH of stomach

b. High-temperature

c. Alkaline pH of gut

d. Mechanical action in the insect gut