Animal Biotechnology MCQs

Question 1

The first patent for a transgenic organism was awarded in 1988. Which organism was patented?

Accepted Answer

A mouse that manufactures human protein in its milk

Answer

A yeast used in industrial processes

Answer

A bacterium able to metabolize components of crude oil

Answer

Life forms cannot be patented

Question 2

Carbon-dioxide when combined with the amino groups in haemoglobin molecule and forms

Accepted Answer

HbCO2

Answer

HbCO

Answer

Hb(CO)(-)3

Answer

Hb(CO3)2

Question 3

Term hybridoma implies

Accepted Answer

Somatic hybridisation

Answer

DNA-RNA hybrid

Answer

Recombination of DNA molecules

Answer

Gametic fusion

Question 4

DNA ligase of E. coli requires which of the following cofactors?

Accepted Answer

(NAD+) as an electron acceptor

Answer

Flavin-adenine dinucleotide as an electron acceptor

Answer

Nicotinamide-adenine dinucleotide phosphate as a phosphate donor

Answer

Nicotinamide-adenine dinucleotide (NAD+) to form an active adenyl enzyme

Question 5

The syndrom es in human in which an individual's somatic cells contain only the one sex chromosome XO is called

Accepted Answer

Turner syndrome

Answer

Klinefelter syndrome

Answer

Downs syndrome

Answer

Super female

Question 6

Choose the correct sequence of steps involved in cytoplast production.

Accepted Answer

Osmotic stabilizer → Digestion of cell wall → Protoplast viability → Cybrid formation

Answer

Digestion of cell wall → Protoplast viability → Cybrid formation → Osmotic stabilizer

Answer

Protoplast viability → Osmotic stabilizer → Digestion of cell wall → Cybrid formation

Answer

Osmotic stabilizer → Digestion of cell wall → Cybrid formation → Protoplast viability

Question 7

Which one of the following statements is incorrect about hybridoma production?

Accepted Answer

Hybridoma cells are made to produce polyclonal antibodies

Answer

Hybridoma cells can use hypoxanthine and thymidine

Answer

DNA synthesis in myeloma cells is blocked by aminopterin

Answer

Polyethylene glycol is used to fuse myeloma cells to B-cells

Question 8

Antibody-producing hybridoma cells are generated by the fusion of a

Accepted Answer

B cell with a myeloma cell

Answer

T cell with a myeloma cell

Answer

Macrophage with a myeloma cell

Answer

T cell and a B cell

Question 9

Which of the following has been produced commercially from mammalian cell cultures?

Accepted Answer

Plasminogen activator

Answer

Antibacterial antibiotics

Answer

Insulin

Answer

Renin