EASY
Earn 100

The Roslin Institute in Scotland produced transgenic modified sheep, Tracy, for?

 

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Important Questions on Biotechnology

MEDIUM
Assertion (A): cry is insect group specific gene of Bt cotton
Reason (R):  cry IAc and cry IIAb controls the cotton boll worms
EASY
What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in a boll worm?
MEDIUM

Assertion (A) : Transgenic Golden Rice is rich in Vitamin A and prevents blindness.

Reason (R) : It is obtained from "Taiwan"

EASY
Plants genes have been altered by manipulation for these uses
I) Increased efficiency of mineral usage
II) Alternative resources to industries
III) Enhanced nutritional value of food
IV) Better management practices and uses of agrochemicals
MEDIUM

The correct combination pair of given strategies in the area of health care developed by the rDNA technological processes.

(I) ELISA Antigen-antibody interaction
(II) RNA interference Cellular defence
(III) PCR Gene therapy
(IV) Transgenic potato Pseudomonas resistance
EASY
Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to
EASY
Which of the following statement is incorrect for 'Genetically Modified plants'?
EASY
Golden rice is a genetically modified crop plant where the incorporated gene is meant for the biosynthesis of
EASY
Bt toxin produced by Bacillus thuringiensis does not kill the producer because the toxin is
EASY
Transgenic animals produce protein α-1 -antitrypisn to treat _________.
EASY

Match the following lists:

  List I   List II
A) Transgenic papaya I) Antigen-antibody interaction
B) Super weeds II) Ring spot virus
C) Soya bean III) Gene pollution leads to resistance to weedicides
D) ELISA IV) Herbicide tolerant

The correct match is

MEDIUM

Assertion (A): Bt toxin exists as inactive prototoxin but once an insect ingests the inactive toxin, it is converted into an active form of toxin.

Reason (R):  Protoxin gets activated in insect gut due to the acidic pH in the gut, which solubilises the protein crystals.

The correct answer is:

EASY
Which of these is not an advantage in genetically modified crops?
MEDIUM

Match the following ?

  Plants   Character   Effect
(a) Flavr Savr tomato (i) Vit - A (p) Abiotic and biotic stress
(b) Golden rice (ii) Male sterility (q) long shell life
(c) Basmati rice (iii) Bnise resistant (r) Prevent blindness
(d) Brassica (iv) Resistant (s) Eliminate manual emasculation
MEDIUM

Assertion A: In Bt cotton B. thuringiensis produces a toxic insecticidal crystalline protein which destroys bollworms.

Reason R: B. thuringiensis produces this toxic protein in an inactive form, but when an insect ingests this inactive protein, it is converted into active form of toxin due to the alkaline pH of gut which solubilises the crystals, which is responsible for the death of bollworm.

EASY
Which of the following is the first step for genetically modifying an organism?