Agricultural Biotechnology MCQs

Question 1

Hybridomas are employed for

Accepted Answer

Synthesis of monoclonal antibodies

Answer

Killing cancer cells

Answer

Production of somatic hybrids

Answer

Synthesis of antibiotics

Question 2

Colchicine arrests cells in Mitosis, because

Accepted Answer

It binds to monomeric tubulin and thus depolymerizes microtubules

Answer

If prevents chromosome condensation by inhibiting histone-histone interactions

Answer

It dephosphorylates tubulin monomers and thus depolymerizes microtubules

Answer

It binds to the + end of F-actin and prevents further addition of G-actin to actin filaments

Question 3

Heart rot of beets is due to deficiency of

Accepted Answer

B

Answer

S

Answer

Mn

Answer

Mo

Question 4

You want to know whether the enzyme you have introduced as a transgene in poplar is being expressed in the intended cells at the intended developmental stage. Which technique would be most informative?

Accepted Answer

Immunolocalization

Answer

QRT-PCR

Answer

RNA in situ hybridization

Answer

Promoter fusion

Question 5

Left handed DNA is

Accepted Answer

Z DNA

Answer

B DNA

Answer

A DNA

Answer

None of the above

Question 6

Deficiency of nitrogen causes

Accepted Answer

Chlorosis in older leaves

Answer

Chlorosis in younger leaves

Answer

Redening of the leaves

Answer

Purpleing of leaves

Question 7

Which of the following transgenic methods were used (in separate experiments) in an attempt to increase the prevalence of certain amino acids in seeds?

Accepted Answer

Altered tRNA gene; overexpression of sunflower seed albumin (SSA)

Answer

Altered tRNA gene; overexpression of human serum albumin (HSA)

Answer

Altered rRNA gene; overexpression of sunflower seed albumin (SSA)

Answer

Altered tRNA gene; repression of sunflower seed albumin (SSA) expression

Question 8

The amount of DNA present in the genome is

Accepted Answer

C value

Answer

D value

Answer

Q value

Answer

P value

Question 9

The osmoticum used for protoplast culture is

Accepted Answer

Both B and C

Answer

Glycerol

Answer

Sorbitol

Answer

Mannitol