Free Biotechnology And Its Applications (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Consider the following statements.

1. Flavr Savris a genetically modified tomato, which remains fresh and retains its flavour much longer than the normal tomato due to blocking of synthesis of fruit softening enzyme polygalacturonase.
2. Recently, the US Government has patented the Indian 'basmati' rice as Rice-Tec.
3. Viruses, bacteria and some other harmful organisms can be used as bioweapons in biological wars.

Which of the above statements are correct?

(a) I and III

(b) I and II

(c) II and III

(d) None of these

Question-2

α-antitrypsin is

(a) an enzyme

(b) an antacid

(c) used to treat arthritis

(d) used to treat emphysema

Question-3

Golden rice is a promising transgenic crop, when released for cultivation, it will help in

(a) alleviation of vitamin A.

(b) producing petrol like fuel from rice.

(c) pest resistance.

(d) herbicide tolerance.

Question-4

How many varieties of rice have been estimated to be present in India?

(a) 20,000

(b) 200

(c) 200,000

(d) 2,000,000

Question-5

Which one of the following techniques made it possible to genetically engineered living organism ?

(a) X-ray diffraction

(b) Recombinant DNA techniques

(c) Heavier isotope labelling

(d) Hybridization

Question-6

The genetically modified (GM) brinjal in India has been developed for

(a) enhancing shelf life

(b) resistance

(c) enhancing mineral content

(d) resistance.

Question-7

Consider the following statements about insulin and select the incorrect.

(a) The two polypeptide chains are interconnected by disulphide bridges

(b) Human insulin is made up of 51 amino acids arranged in two polypeptide chains

(c) In mammals including humans, insulin is synthesised as a prohormone, which contains an extra stretch called the C-peptide

(d) C-peptide is present in the mature insulin

Question-8

Which step was proved to be the main challenge in the production of human insulin by recombinant DNA technology?

(a) Addition of C-peptide to proinsulin

(b) Splitting A and B–peptide chain

(c) Getting insulin assembled into mature form

(d) Removal of C-peptide from active insulin

Question-9

Peptide A and peptide B is linked by how many disulphide linkages between their proinsulin?

(a) 2

(b) 1

(c) 3

(d) 4

Question-10

Early detection of a disease is possible by

(a) Gene therapy

(b) PCR

(c) recombination DNA technology ad ELISA

(d) both (b) and (c)