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Biotechnology and its Applications · Question 50

AIPMT 2012 (Prelims)MCQEasy📈 Topic in 75% papers+4−1
1

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin 'A' deficiency?

  1. Flavr Savr tomato
  2. Canola
  3. Bt-brinjal
  4. Golden rice

Answer

(4) Golden rice

Solution

Golden rice is a transgenic variety of rice genetically engineered to produce -carotene (provitamin A) in the grain.

-carotene is converted into vitamin A in the body, eating golden rice can prevent night blindness caused by vitamin A deficiency.

(Flavr Savr tomato – delayed ripening; Canola – low erucic acid oil; Bt-brinjal – insect resistance.)

Answer: (4)

AIPMT 2012 (Prelims)

Keep practising — Biotechnology and its Applications

2

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein:

  1. is activated by acid pH of the foregut of the insect pest.
  2. binds with epithelial cells of midgut of the insect pest ultimately killing it
  3. is coded by several genes including the gene cry
  4. does not kill the carrier bacterium which is itself resistant to this toxin
AIPMT 2011 (Mains)
3

Silencing of mRNA has been used in producing transgenic plants resistant to:

  1. White rusts
  2. Nematodes
  3. Bacterial blights
  4. Bollworms
AIPMT 2011 (Mains)
4

Maximum number of existing transgenic animals is of :

  1. Mice
  2. Cow
  3. Pig
  4. Fish
AIPMT 2011 (Prelims)
5

The process of RNA interference has been used in the development of plants resistant to :

  1. Nematodes
  2. Fungi
  3. Viruses
  4. Insects
AIPMT 2011 (Prelims)
6

Which one of the following is now being commercially produced by biotechnological procedures?

  1. Insulin
  2. Morphine
  3. Nicotine
  4. Quinine
AIPMT 2010 (Mains)
7

DNA or RNA segment tagged with a radioactive molecule is called –

  1. Clone
  2. Probe
  3. Plasmid
  4. Vector
AIPMT 2010 (Prelims)
8

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

  1. Enhancing shelf life
  2. Insect-resistance
  3. Drought-resistance
  4. Enhancing mineral content
AIPMT 2010 (Prelims)
9

Genetic engineering has been successfully used for producing –

  1. transgenic models for studying new treatments for certain cardiac disease
  2. animals like bulls for farm work as they have super power
  3. transgenic mice for testing safety of polio vaccine before use in humans
  4. transgenic Cow-Rosie which produces high fat milk for making ghee
AIPMT 2010 (Prelims)
10

Some of the characteristics of Bt cotton are –

  1. High yield and production of toxic protein crystals which kill dipteran pests
  2. High yield and resistance to bollworms
  3. Long fibre and resistance to aphids
  4. Medium yield, long fibre and resistance to beetle pests
AIPMT 2010 (Prelims)
11

An improved variety of transgenic basmati rice

  1. gives high yield but has no characteristic aroma
  2. does not require chemical fertilizers and growth hormones
  3. is completely resistant to all insect pests and diseases of paddy
  4. gives high yield and is rich in vitamin A
AIPMT 2010 (Prelims)

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