science & tech MCQ section 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 21

Construction of recombinant DNA involves

a) cleaving DNAsegment with endonuclease and rejoining them with ligase

b) cleaving and rejoining DNA segments with ligase alone

c) cleaving DNAsegments with ligase and rejoining them with endonuclease

d) cleavingandrejoiningDNAsegmentswithendonuclease alone

Answer: (a)

Restriction endonucleases are molecular scissors used to cleave DNA at specific sites and ligase enzymes are used to join /ligate the two DNA pieces (e.g- Okazaki fragments joining during DNA replication)

Question : 22

Consider the following statements:

  1. Canada’s M3M (Maritime Monitoring and Messaging Micro-Satellite) is set to be launched by India’s PSLV rocket.
  2. The satellite is due to be launched in July 2015.
  3. The satellite was built for the Canadian Department of National Defence, and is a communications satellite.
Which of the statements given above is/are correct?

a) 1 and 3 only

b) 2 and 3 only

c) 1 and 2 only

d) All of the above

Answer: (d)

Question : 23

World’s first Green Helicopter tested in Germany named

a) Nalocopter

b) Domocopter

c) Volocopter

d) Greenocopter

Answer: (c)

The world’s first green helicopter which is noiseless and emission-free has been successfully tested in Germany.The two-seat prototype of the ‘Volocopter’, by the company e-volo, made its maiden voyage on November 17, 2013 in Karlsruhe, Germany.

Question : 24

First cloned animal

a) molly sheep

b) dolly sheep

c) polly sheep

d) dog

Answer: (b)

Dolly sheep was the first cloned animals produced by inserting egg nucleus of mother sheep into the udder cytoplasm by electric stimulation [Shock].

Question : 25

Consider the following statements:

  1. 102nd Indian Science Congress 2015 was held in New Delhi.
  2. Delhi is hosting it again after the gap of 45 years.
  3. It is 5 day event and will witness deliberations and presentation of papers by the scientific fraternity from across the globe.
Which of the statements given above is/are correct?

a) 1 and 3 only

b) 3 only

c) 1 and 2 only

d) All of the above

Answer: (b)

Prime Minister Narendra Modi has inaugurated the Indian Science Congress 2015 at the Mumbai University. Mumbai is hosting it again after the gap of 45 years.

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