Which is incorrect? 

(1) Specific Bt toxin genes have been isolated from Bacillus thuringiensis. 

(2) Meloidegyne incognitia does not infect the roots of tobacco plants

(3) In mammals insulin is synthesized as a prohormone

(4) ADA deficiency can be cured by bone marrow transplantation

Subtopic:  Interference RNA Tech |
 88%
From NCERT
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Statement-I: Non-homologous DNA will attach to a DNA probe. 

Statement-II: At high temperature, two complementary DNA strands will anneal. 

(1) Only statement - I is true

(2) Only statement - II is true 

(3) Both statements - I and II are true

(4) Both statements - I and II are false

Subtopic:  Molecular Diagnosis |
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Match the following :-

Column-I Column-II
I. Biopiracy (A)  Gene therapy
II.   Retroviral vector materials   (B)   Illegal removal of biological    
III. Biopatent entities (C) Right granted for biological
IV.   Kohler and Milstein         (D)  Monoclonal antibody

1. I - B, II - A, III - D, IV - C

2. I - B, II - A, III - C, IV - D

3. I - B, II - C, III - A, IV - D

4. I - D, II - A, III - B, IV - C

Subtopic:  Gene Therapy | Ethical Issues |
 85%
From NCERT
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Match the following :-

Column-I

Column-II

I. Escherichia coli

(A) Nif gene

II. Bacillus thuringiensis

(B) Interferon

III. Rhizobium meliloti

(C) Bt toxin

IV. Pseudomonas putida

(D) Bioremediation

(1) I - B, II - A, III - D, IV - C

(2) I - B, II - A, III - C, IV - D

(3) I - B, II - C, III - A, IV - D

(4) I - D, II - A, III - B, IV - C

Subtopic:  Bt Crops | Transgenic Microbes & Animals |
 90%
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Probes are molecules of

(1) DNA

(2) RNA

(3) Proteins

(4) All of the above

Subtopic:  Molecular Diagnosis |
 67%
From NCERT
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New biotechnology utilizes new organisms developed from present organisms using
a. Mutations
b. Recombinant DNA Technology
c. Recombinations
d. All correct

Subtopic:  Transgenic Microbes & Animals |
 52%
From NCERT
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The immobilization of enzymes is achieved by
a. Killing the cells without affecting enzymes
b. Attaching the enzymes covalently to a solid support
c. Entrapping the living cells in gel
d. All of these

 75%
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A genetically engineered micro-organism which has found extensive use in bioremediation oil spills is a species of
a. Trichoderma
b. Mucuna
c. Pseudomonas
d. Bacillus

Subtopic:  Transgenic Microbes & Animals |
 77%
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Incorporation of the gene for phytoene synthase and carotene desaturase to make a particular variety of yellowish rice has proven useful in the treatment of-

(1) Congenital heart disease

(2) Night blindness

(3) Xeroderma

(4) Phrenoderma

Subtopic:  Other GM Crops |
 91%
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Cry toxin acts by

(1) Lysis of intestinal cells

(2) Binding to midgut epithelium

(3) Cell swelling

(4) More than one correct

Subtopic:  Bt Crops |
 82%
From NCERT
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