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 |
 84%
From NCERT
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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 |
 59%
From NCERT
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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 |
 94%
From NCERT
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The backbone of the DNA is formed by

(1)sugar, phosphate, sugar chain

(2)sugar, phosphate, nitrogenous base chain

(3)Phosphate, sugar, phosphate chain

(4)Both A and B

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick Part 2 | Double Helix : Watson & Crick |
 59%
From NCERT
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In DNA strands, there are ____ H- bonds b/w A and T and ____H-bonds b/w G and C respectivley

(1)2,3

(2)3,2

(3)2,2

(4)3,3

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 91%
From NCERT
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Which of the following is the pitch of B-DNA

(1)34Angstrom

(2)34 nanometre

(3)34 picometre

(4)34 femtometre

Subtopic:  Double Helix : Watson & Crick Part 2 | Double Helix : Watson & Crick |
 85%
From NCERT
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Which model explains the double helix nature of DNA

(1)Watson and Crick Model

(2)Gene Battery Model

(3)Sanger Sequencing

(4)Both A and C

Subtopic:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 94%
From NCERT
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The amino acids which are synthesised by our body are known as

(1)Essential amino acids

(2)Non-essential amino acids

(3)Optical amino acids

(4)Both A and C

Subtopic:  Different Amino Acids |
 87%
From NCERT
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The body meets the demand of essential amino acids through

(1) Food

(2) Body synthesised  on its own

(3) Both A and B

(4) None of these

Subtopic:  Different Amino Acids |
 78%
From NCERT
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Which of the following is not the function of protein

(1)Act as hormones

(2)act as enzymes

(3)act as genetic material

(4)fight against infections

Subtopic:  Structural Organisation of Proteins |
 80%
From NCERT
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