The monomer of nucleic acid is

(1)nucleotides

(2)nucleosides

(3)nucleus

(4)Both 1 and 2 

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 76%
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Which of the following are the components of nucleotides?

1. Heterocyclic nitrogenous bases, monosaccharides, phosphoric acid
2. Homocyclic nitrogenous bases, monosaccharides, phosphoric acid
3. Heterocyclic nitrogenous bases, Disaccharides, phosphoric acid
4. Heterocyclic nitrogenous bases, Polysaccharides, phosphoric acid
Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 77%
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How many types of nitrogenous bases are present in nucleic acid

1. 4
2. 3
3. 5
4. 6

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 68%
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How many of the following are purines?

Adenine, Uracil, Cytosine, thymine, Cysteine, threonine, Tryptophan, Guanine, Thymine

(1)5

(2)4

(3)2

(4)3

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 86%
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How many of the following are pyrimidines?

Adenine, Uracil, Cytosine, Cysteine, threonine, Trytophan, Guanine, Thymine

1. 5

2. 4

3. 2

4. 3

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 82%
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Which of the following is true about sugar of RNA

(1)Ribose sugar is present

(2)2’deoxyribose sugar is present

(3)5C sugar is present

(4)All is true except (B)

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 86%
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The number of cyclic rings present in purines and pyrimidines are

1. 2,1 respectively

2. 1,2 respectively

3. 2,2 respectively

4. 1,1 respectively

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 80%
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The bond between the phosphate and hydroxyl group of sugar  is an

(1)ether bond

(2)ester bond

(3)glycosidic bond

(4)amide bond

Subtopic:  Double Helix : Watson & Crick Part 2 | Double Helix : Watson & Crick |
 83%
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How many phosphodiester bonds are present in 5’ATTTTTGG 3’ sequence of nucleotides

1. 7
2. 9
3. 8
4. 6

Subtopic:  Double Helix : Watson & Crick Part 2 | Double Helix : Watson & Crick |
 61%
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The DNA exists as _________helix which runs ________

(1)double, parallel

(2)double, antiparallel

(3)single, perpendicular

(4)single, parallel

Subtopic:  Double Helix : Watson & Crick Part 2 | Double Helix : Watson & Crick |
 93%
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