Which of the following is true about sugar of RNA

(A)Ribose sugar is present

(B)2’deoxyribose sugar is present

(C)5C sugar is present

(D)All is true except (B)

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Which of the following is true about sugar of DNA

(A)Ribose sugar is present

(B)2’deoxyribose sugar is present

(C)4C sugar is present

(D)Both B and C

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The negative charge on DNA is because of the presence of ________in nucleotides

(A)phosphate

(B)sugar

(C)Nitrogenous bases

(D)All of the above

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The number of cyclic rings present in purines and pyrimidines are

(A)2,1 respectively

(B)1,2 respectively

(C)2,2 respectively

(D)1,1 respectively

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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

Concept Questions :-

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