Given below are two statements : 
Statement I: Proteins encoded by genes cryIAc and cryllAb control corn borer, that of crylAb control the cotton bollworms 
Statement II: Bt toxin protein exist as inactive protoxins but once an insect ingests the inactive toxin, it is converted into an active form of toxin due to the alkaline pH of the gut 
In light of the above statements, choose the most appropriate answer from the options given below:
1. Both Statement I and Statement II are true 
2. Both Statement I and Statement II are false 
3. Statement I is true and Statement II is false 
4. Statement I is false but Statement II is true 
Subtopic:  Bt Crops |
 77%
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Given below are two statements:
Statement I: Bacillus thuringiensis forms protein crystals which contain a toxin that kills certain insects but not Bacillus because Bt toxin protein exists as inactive protoxins in Bacillus.
Statement II: Bacillus thuringiensis forms protein crystals which contain a toxin that kills certain insects but not Bacillus because toxin requires alkaline pH available in the gut of insects and which solubilises the crystals in order to convert into an active form.
In light of the above statements, choose the most appropriate answer from the options given below.
1.  Both statement I and statement II are true
2.  Both statement I and statement II are false
3.  Statement I is correct but statement II is false
4.  Statement I is incorrect but statement II is true
Subtopic:  Bt Crops |
 92%
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Read the following statements carefully.
(i) PCR is used to detect mutations in genes in suspected cancer patients.
(ii) A direct method to insert a foreign gene into plant cells is micro-injection.
(iii) The first transgenic cow, Rosie, produced human protein-enriched milk, i.e., 5.4 grams per litre.
(iv) RNAi takes place in all eukaryotic organisms as a method of cellular defense.
How many of the above statements are correct?
1. 1
2. 2
3. 3
4. 4
Subtopic:  Molecular Diagnosis | Transgenic Microbes & Animals |
 56%
From NCERT
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Match column I with column II and select the correct option.
Column I Column II
a. Patent on Basmati rice by an American company (i) 1983
b. First clinical gene therapy (ii) 1997
c. Humulin by Eli Lilly Co. (iii) 1972
d. Construction of first recombinant DNA (iv) 1990

1. a(ii), b(iv), c(i), d(iii)
2. a(i), b(ii), c(iii), d(iv)
3. a(iv), b(ii), c(i), d(iii)
4. a(ii), b(iv), c(iii), d(i)
Subtopic:  Ethical Issues |
 78%
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Read the following statements carefully.
Statement A: Increased agricultural yields have been partly due to the use of better management practices and use of agrochemicals, but mainly due to the use of improved crop varieties.
Statement B: GMOs increased reliance on chemical pesticides by producing pesticide-resistant crops.
1. Both statements A and B are correct
2. Both statements A and B are incorrect
3. Statement A is correct, B is incorrect
4. Statement A is incorrect, B is correct
Subtopic:  Intro to Agri Applications |
From NCERT
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With regard to insulin choose the incorrect statement(s).
a. C-peptide is found attached with both A and B chains of insulin with the help of disulphide bonds.
b. In 1983, both A and B chains were produced by introducing alien genes in plasmid of same E.coli by Eli Lilly.
c. A-peptide and B-peptide of insulin are interconnected by peptide bonds in mature insulin.
d. Insulin from an animal source may cause allergy or other types of reactions in some diabetic patients.
Choose the correct answer from the options given below.
1. (a) and (b) only
2. (c) and (d)
3. (a), (b) and (c)
4. (d) only
Subtopic:  Med Applications & Humulin |
 55%
From NCERT
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Assertion (A): Insulin used for diabetes was earlier extracted from the pancreas of slaughtered cattle and pigs but now it is not used.
Reason (R): Aarti along with some other patients took insulin injections in which insulin was from an animal source and they manifested an allergic response to that.
In light of the above statements, select the correct option:
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Med Applications & Humulin |
 82%
From NCERT
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Assertion (A): In 1983, Eli Lilly used E.coli, as heterologous host for the production of humulin 
Reason (R): Production of insulin in E.coli by genetic engineering is possible because bacterial cells can carry out the RNA splicing mechanism 
Choose the correct answer from the options given below 
1. Both (A) and (R) are true and (R) is the correct explanation of the (A) 
2. Both (A) and (R) are true but (R) is not the correct explanation of the (A) 
3. (A) is true but (R) us false 
4. (A) is false but (R) is true 
Subtopic:  Med Applications & Humulin |
 54%
From NCERT
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Which combinations of DNA could be present in a transgenic organism?
(i) invertebrate animal DNA in mammal DNA
(ii) prokaryotic DNA in plant DNA
(iii) plant DNA in animal DNA
1. (i), (ii) and (iii)
2. (ii) and (iii) only
3. (i) and (iii) only
4. (i) and (ii) only
 
Subtopic:  Transgenic Microbes & Animals |
 52%
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Mutations in the CFTR gene cause cystic fibrosis (CF). The non-mutated allele of the gene can be obtained and then introduced into the lung cells of a person with CF using liposomes as a vector. This treatment gives only short-term relief from the symptoms of CF.
Which of the following statements would be a correct explanation of this treatment?
1. Genes are unstable and break down over time in the cell.
2. Lung cells are constantly being replaced and new cells will have the faulty allele.
3. The non-mutated allele is recessive.
1.  1 and 2 only
2.  1 only
3.  2 only
4.  1 and 3 only
Subtopic:  Med Applications & Humulin |
 50%
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