Go through the statements:

A. During the processing of the prohormone "proinsulin" into the mature "insulin", C-peptide is removed from proinsulin.

B. In hydridoma technology, B-cells are fused with myeloma cells.

C. Genetic engineering has been successfully used for producing transgenic mice for testing safety of polio vaccine before use in humans.

D. Some of the characteristics of Bt cotton are high yield and resistance to bollworms.

E. An improved variety of transgenic basmati rice gives high yield and is rich in vitamin A.

F. Gray biotechnology' is referred to industrial process.

G. The polymerase chain reaction is a technique that is used for in vivo replication of DNA. 

How many statement(s) is wrong?

(1) One

(2) Two

(2) Four

(4) Six

Subtopic:  Large Scale Production: II | Large Scale Production |
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Molecular probes used for identification of recombinant clone carrying the desired DNA insert can be:

A. Denatured double stranded DNA probes

B. doubles stranded RNA probes

C. Protein probes

D. Single stranded DNA probes.

(1) A, B

(2) B, C

(3) A, D

(4) A, B, C, D

Subtopic:  Process of Biotech |
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Which is a natural genetic engineer of the plants?

(1)E.coli

(2)A. tumefaciens

(3)Rhizobium

(4)Pseudomonas

Subtopic:  Tools: Vectors: II | Tools |
 83%
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The thermostable enzyme Taq polymerase used in PCR technique was discovered by

(1)Alec Jeffrey

(2)Karry Mullis

(3)Temin

(4)Baltimore

Subtopic:  Polymerase Chain Reaction: PCR |
 66%
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To be useful in genetic engineering a vector must have

    1. An origin for replication
    2. Low copy number
    3. Low rates of multiplication
    4. Many cloning sites for the same enzyme
Subtopic:  Tools: Vectors: I | Tools |
 90%
From NCERT
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In 1960’s two enzymes were discovered in bacteria that were responsible for providing immunity against bacteriophages. One was Restriction Endonuclease and the other was

1. Methylase

2. Exonuclease

3. Aminotransferase

4. Terminal Transferase

Subtopic:  Introduction & History: II | Tools: Enzymes: I | Introduction & History | Tools |
 70%
From NCERT
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 E.coli is  a commonly used host for gene cloning because

1. It is free from elements that interfere with replication and recombination of DNA

2. It is easy to transform

3. It supports replication of inserted DNA.

4. All of these

Subtopic:  Host & Desired DNA: I | Host & Desired DNA |
 93%
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A gene has been inserted into a vector for the purpose of cloning the sequence only. This vector is called

a.  Suppression vector

b. Expression vector

c. Cloning vector

d. None of these

Subtopic:  Tools: Vectors: I | Tools |
 92%
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Electroporation facilitates insertion of foreign DNA into the cell by

1. Changing the porocity of the membrane

2. Changing the electrical potential of the membrane

3. Lysing the cell wall

4. Active transport

Subtopic:  Tools: Vectors: II | Tools |
 54%
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The names associated with construction of first Recombinant DNA are

a. Arber, Nathans, Smith

b. Annie Chang, Boyer, Berg, Cohen

c. Howard Temin, Brenner, Sharp

d. Tim Hunt, Hartwell, Nurse

Subtopic:  Tools: Enzymes: I | Tools |
 72%
From NCERT
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