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BiochemistryNucleic Acids

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Q51740. Interferon

A.Is virus specific

B.Is a bacterial product

C.Is a synthetic antiviral agent

D.Requires expression of cellular genes

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51741. Repressor binds to DNA sequence and regulate the transcription. This sequence is called

A.Attenuator

B.Terminator

C.Anti terminator

D.Operator

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51742. Okazaki fragment is related to

A.DNA synthesis

B.Protein synthesis

C.mRNA formation

D.tRNA formation

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51743. The region of DNA known as TATA BOX is the site for binding of

A.DNA polymerase

B.DNA topoisomerase

C.DNA dependent RNA polymerase

D.Polynucleotide phosphorylase

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51744. Reverse transcriptase is capable of synthesising

A.RNA → DNA

B.DNA → RNA

C.RNA → RNA

D.DNA → DNA

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51745. A tetrovirus is

A.Polio virus

B.HIV

C.Herpes virus

D.Tobacco mosaic virus

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51746. Peptidyl transferase activity is located in

A.Elongation factor

B.A charged tRNA molecule

C.Ribosomal protein

D.A soluble cytosolic protein

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51747. Ultraviolet light can damage a DNA strand causing

A.Two adjacent purine residue to form a

B.Two adjacent pyrimidine residues to form

C.Disruption of phosphodiesterase linkage

D.Disruption of non-covalent linkage

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MCQs in Biochemistry

BiochemistryNucleic Acids

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Q51748. Defective enzyme in Hurler’s syndrome is

A.α-L-diuronidase

B.Iduronate sulphatase

C.Arylsulphatase B

D.C-acetyl transferase

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51749. Presence of arginine can be detected by

A.Sakaguchi reaction

B.Million-Nasse reaction

C.Hopkins-Cole reaction

D.Gas chromatography

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51750. A nitrogenous base that does not occur in mRNA is

A.Cytosine

B.Thymine

C.Uracil

D.All of these

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51751. In nucleotides, phosphate is attached to sugar by

A.Salt bond

B.Hydrogen bond

C.Ester bond

D.Glycosidic bond

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51752. Cyclic AMP can be formed from

A.AMP

B.ADP

C.ATP

D.All of these

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51753. A substituted pyrimidine base of pharma- cological value is

A.mRNA

B.tRNA

C.DNA

D.None of these

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51754. In DNA, the complementary base of adenine is

A.Guanine

B.Cytosine

C.Uracil

D.Thymine

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51755. In DNA, three hydrogen bonds are formed between

A.Adenine and guanine

B.Adenine and thymine

C.Guanine and cytosine

D.Thymine and cytosine

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51756. Left handed double helix is present in

A.Z-DNA

B.A-DNA

C.B-DNA

D.None of these

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51757. Nuclear DNA is present in combination with

A.Histones

B.Non-histones

C.Both (A) and (B)

D.None of these

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51758. Number of guanine and cytosine residues is equal in

A.mRNA

B.tRNA

C.DNA

D.None of these

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MCQs in BiochemistryNucleic Acids

BiochemistryNucleic Acids

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Q51759. Alkalis cannot hydrolyse

A.mRNA

B.tRNA

C.rRNA

D.DNA

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MCQs in BiochemistryNucleic Acids

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