Match each item in Column I with one item in Column II and chose your answer from the codes given below:

    Column I                   Column II
  (antibiotic)                    
(effect)
I. Tetracycline            1. 
inhibits binding of aminoacyl tRNA to the ribosome
II. Streptomycin        2. inhibits initiation of 
translation
III. Chloramphenicol  3. inhibits peptidyl 
transferase
IV. Erythromycin       4. inhibits translocation of 
mRNA along with ribosome

Codes:

1. 1 2 3 4

2. 2 1 4 3

3. 2 1 3 4

4. 1 2 4 3

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RNA can act as

(1)Adapter molecule

(2)Catalytic molecule as well as Genetic material

(3)Structural molecule

(4)All of the above

Subtopic:  The DNA |
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Which of the following would be nucleoside found only in RNA?

(1) Thymidine

(2) Cytidine

(3) Uridine

(4) Adenosine

Subtopic:  The DNA |
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The most interesting molecule in the living system is

(1) the most abundant genetic material

(2)the genetic material in most of the organisms

(3)the long polymer of deoxyribonucleotides

(4)all of the above

Subtopic:  The DNA |
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Which of the following is a pyrimidine base found in DNA?
1. Adenine

2. Guanine

3. Uracil

4. Cytosine

Subtopic:  The DNA |
 86%
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Purines found both in DNA and RNA are:

1.Cytosine and thymine2.Adenine and thymine
3.Adenine and guanine4.Guanine and cytosine

Subtopic:  The DNA |
 85%
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Watson and Crick based their model of DNA on X-ray diffraction data produced by:

1. Hershey and Chase

2. Marie Curie and Pierre Curie

3. Franklin and Wilkins

4. Meselson and Stahl

Subtopic:  The DNA |
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Which organism has more base pairs ?

1. E.coli

2. Bacteriophage

3. human

4. Yeast

Subtopic:  The DNA |
 81%
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Which of the following is a genetic material?

(1)Dideoxyribo nucleic acid

(2)Deoxyribo nucleic acid

(3)Deoxyribulose nucleic acid

(4)Deoxyribosome nucleic acid

Subtopic:  The DNA |
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How many types of nucleic acids are found in the living system?

(1)1

(2)2

(3)4

(4)3

Subtopic:  The DNA |
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