Biotechnology and Its Applications-Principles and Process of Biotechnology (NEET (National Eligibility cum Medical Entrance Test) Biology): Questions 27 - 32 of 47

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Question number: 27

» Biotechnology and Its Applications » Principles and Process of Biotechnology

MCQ▾

Question

Thermal cycle takes place in which technique

Choices

Choice (4) Response

a.

PCR technique

b.

Gel electrophoresis

c.

Centrifugation

d.

Southern blotting

Question number: 28

» Biotechnology and Its Applications » Principles and Process of Biotechnology

MCQ▾

Question

Restriction enzymes

Choices

Choice (4) Response

a.

Make DNA complementary to an existing DNA or RNA

b.

Are required in vectorless direct gene transfer.

c.

Are endonucleases which cleave DNA at specific sites

d.

Cut or join DNA fragments

Question number: 29

» Biotechnology and Its Applications » Principles and Process of Biotechnology

MCQ▾

Question

Restriction endonucleases

Choices

Choice (4) Response

a.

Are synthesized by bacteria as part of their defense mechanism

b.

Are used in genetic engineering for ligating two DNA molecules

c.

Are used for invitro DNA synthesis

d.

Are present in mammalian cells for degradation of DNA when the celI dies

Question number: 30

» Biotechnology and Its Applications » Principles and Process of Biotechnology

MCQ▾

Question

A bacterium modifies its DNA by adding methyl groups to the DNA, It does so to

Choices

Choice (4) Response

a.

Protect its DNA from its own restriction enzyme

b.

Turn its gene on

c.

Clone its DNA

d.

Be able to transcribe many genes simultaneously

Question number: 31

» Biotechnology and Its Applications » Principles and Process of Biotechnology

MCQ▾

Question

Who isolated the first restriction endonucleases

Choices

Choice (4) Response

a.

Sanger

b.

Nathans and Smith

c.

Temin & Baltimore

d.

Paul berg

Question number: 32

» Biotechnology and Its Applications » Principles and Process of Biotechnology

MCQ▾

Question

Biologically functional gene coding for tyrosine t- RNA of E. coil synthesized by Khorana in 1979 had

Choices

Choice (4) Response

a.

77 nucleotide pairs

b.

333 nucleotide pairs

c.

312 nucleotide pairs

d.

207 nucleotide pairs

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