In proteins, amino acids are linked by  a type of

(A)Acetyl bond

(B)Amide bond

(C)Ester bond

(D)Glycosidic bond

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The formation of amide bond shows which type of reaction

(A)Substitution reaction

(B)Elimination reaction

(C)Addition reaction

(D)Rearrangement reaction

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The formation amide bond shows which type of reaction

(A)hydrolysis

(B)Dehydration

(C)Dehydrogenation

(D)Hydrogenation

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In polysaccharides the individual monosaccharides are linked by

(A)Phosphodiester bond

(B)Amide bond

(C)Ester bond

(D)Glycosidic bond

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The bond between the phosphate and hydroxyl group of sugar  is an

(A)ether bond

(B)ester bond

(C)glycosidic bond

(D)amide bond

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How many phosphodiesters bond are present in 5’ATTTTTGG 3’ sequence of nucleotides

(A)7

(B)9

(C)8

(D)6

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How many ester bonds are present in 5’ATTTTTGG 3’ sequence of nucleotides

(A)7

(B)9

(C)8

(D)6

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The DNA exists as _________helix which runs ________

(A)double, parallel

(B)double, antiparallel

(C)single, perpendicular

(D)single, parallel

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The backbone of the DNA is formed by

(A)sugar, phosphate, sugar chain

(B)sugar, phosphate, nitrogenous base chain

(C)Phosphate, sugar, phosphate chain

(D)Both A and B

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Both the strands of the DNA are joined by

(A)Disulphide bond

(B)hydrogen bonds

(C)Glycosidic bonds

(D)phosphodiester bonds

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