Genetics and Evolution-Molecular Basis of Inheritance (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology): Questions 7 - 12 of 85

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Question number: 7

» Genetics and Evolution » Molecular Basis of Inheritance » Lac Operon

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MCQ▾

Question

In the lac operon, the structural genes are switched off when

Choices

Choice (4) Response

a.

Repressor binds to regulator

b.

Repressor binds to operator.

c.

Repressor binds to promotor.

d.

Repressor binds to inducer.

Question number: 8

» Genetics and Evolution » Molecular Basis of Inheritance » Gene Expression and Regulation

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MCQ▾

Question

In operon concept, the regulator gene regulates chemical reactions in the cell by

Choices

Choice (4) Response

a.

Inhibiting migration of mRNA into cytoplasm.

b.

Inhibiting transcription of mRNA

c.

Inhibiting the substrate in the reaction.

d.

Inactivating enzymes in the reaction

Question number: 9

» Genetics and Evolution » Molecular Basis of Inheritance » DNA Replication

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MCQ▾

Question

The point mutations A to G, C to T, C to G and T to A in DNA are

Choices

Choice (4) Response

a.

All four are transition.

b.

Transition, transition, transversion and transversion respectively.

c.

Transversion, transversion, transition and transition respectively.

d.

Transition, transversion, transition and transversion respectively.

Question number: 10

» Genetics and Evolution » Molecular Basis of Inheritance » Translation

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MCQ▾

Question

Which one the following mRNA can be translated completely?

Choices

Choice (4) Response

a.

AUG UUC UCC UGA UGG UAU

b.

AUC ACG UAU UUC UGA CUC

c.

AUG UUC UCC UGG UAA UAU

d.

AUG UAU UUC UGC CUC UAG

Question number: 11

» Genetics and Evolution » Molecular Basis of Inheritance » Structure of DNA and RNA

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MCQ▾

Question

Adenine is 30 % then what would be the % of guanine?

Choices

Choice (4) Response

a.

10%

b.

30%

c.

20%

d.

40%

Question number: 12

» Genetics and Evolution » Molecular Basis of Inheritance » DNA Replication

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MCQ▾

Question

Semiconservative model of DNA replication was proposed by which workers in eukayotes?

Choices

Choice (4) Response

a.

Taylor, Woods and Huges

b.

Watson and Crick

c.

Nirenberg and Khorana

d.

Messelson and Stahl

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