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Biotechnology and its Applications · Question 31

NEET (UG) 2019MCQEasy📈 Topic in 75% papers+4−1
1

Which of the following is true for Golden rice?

  1. It is drought tolerant, developed using Agrobacterium vector.
  2. It has yellow grains, because of a gene introduced from a primitive variety of rice.
  3. It is Vitamin A enriched, with a gene from daffodil.
  4. It is pest resistant, with a gene from Bacillus thuringiensis.

Answer

(3) It is Vitamin A enriched, with a gene from daffodil.

Solution

As per NCERT, genetically modified crops can have enhanced nutritional value, e.g., Vitamin A enriched rice (Golden rice).

Golden rice carries genes for -carotene (provitamin A) synthesis in the endosperm; the phytoene synthase gene was taken from daffodil (and the carotene desaturase gene from the bacterium Erwinia uredovora).

-Carotene gives the grains their golden-yellow colour; the gene is not from a primitive rice variety.

Pest resistance with a gene from Bacillus thuringiensis describes Bt crops, not Golden rice; Golden rice is not a drought-tolerant variety.

Golden rice is Vitamin A enriched, with a gene from daffodil.

Answer: (3)

Out of syllabusNEET (UG) 2019

Keep practising — Biotechnology and its Applications

2

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

  1. Retrovirus
  2. Ti plasmid
  3. phage
  4. pBR322
NEET 2018
3

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is

  1. Indian Council of Medical Research (ICMR)
  2. Council for Scientific and Industrial Research (CSIR)
  3. Research Committee on Genetic Manipulation (RCGM)
  4. Genetic Engineering Appraisal Committee (GEAC)
NEET 2018
4

A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to

  1. Co-667
  2. Sharbati Sonora
  3. Lerma Rojo
  4. Basmati
NEET 2018
5

Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

  1. bio-infringement
  2. biodegradation
  3. biopiracy
  4. bioexploitation
NEET 2018
6

The two polypeptides of human insulin are linked together by

  1. Hydrogen bonds
  2. Covalent bond
  3. Disulphide bridges
  4. Phosphodiester bond
NEET 2016 (Phase 1)
7

Which part of the tobacco plant is infected by Meloidogyne incognita ?

  1. Flower
  2. Stem
  3. Leaf
  4. Root
NEET 2016 (Phase 1)
8

Which kind of therapy was given in 1990 to a four-year-old girl with adenosine deaminase [ADA] deficiency ?

  1. Radiation therapy
  2. Immunotherapy
  3. Gene therapy
  4. Chemotherapy
NEET 2016 (Phase 2)
9

Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of -

  1. Vitamin C
  2. Omega 3
  3. Vitamin A
  4. Vitamin B
AIPMT 2015
10

In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to :

  1. action of gut micro-organisms
  2. presence of conversion factors in insect gut
  3. alkaline pH of the insect gut
  4. acidic pH of the insect gut
AIPMT 2015 (Cancelled)
11

Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services ?

  1. Research Committee on Genetic Manipulation
  2. Genetic Engineering Approval Committee
  3. Indian Council of Agricultural Research
  4. Bio-safety committee
AIPMT 2015 (Cancelled)

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