Cell Structure and Function-Chemical Constituents of Living Cells (NEET (National Eligibility cum Medical Entrance Test) Biology): Questions 20 - 27 of 124

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Question number: 20

» Cell Structure and Function » Chemical Constituents of Living Cells » Biomolecules-Structure and Function

MCQ▾

Question

Which of the following has highest lactose content?

Choices

Choice (4) Response

a.

Cow milk

b.

Goat milk

c.

Human milk

d.

Buffalo milk

Question number: 21

» Cell Structure and Function » Chemical Constituents of Living Cells » Enzymes - Types, Properties, Enzyme Action

MCQ▾

Question

Who got the Nobel Prize working on enzymes in the year 1978?

Choices

Choice (4) Response

a.

R. Misra

b.

W. Arber and D. Nathans

c.

Nass and Nass

d.

H. G. Khorana

Question number: 22

» Cell Structure and Function » Chemical Constituents of Living Cells » Enzymes - Types, Properties, Enzyme Action

MCQ▾

Question

Enzymes are different from inorganic catalysts by

Choices

Choice (4) Response

a.

Having high diffusion rate.

b.

Working at high temperature.

c.

Being proteinnaceous in nature.

d.

Not being used up in reactions.

Question number: 23

» Cell Structure and Function » Chemical Constituents of Living Cells » Enzymes - Types, Properties, Enzyme Action

MCQ▾

Question

Which one of the following statements is true for the enzymes?

Choices

Choice (4) Response

a.

All enzymes are not proteins.

b.

All enzymes are proteins.

c.

All proteins are enzymes.

d.

All enzymes are vitamins.

Question number: 24

» Cell Structure and Function » Chemical Constituents of Living Cells » Enzymes - Types, Properties, Enzyme Action

MCQ▾

Question

To explain the mechanism of enzymatic action, who proposed “Lock and key hypothesis”?

Choices

Choice (4) Response

a.

Koshland

b.

Sumner

c.

Fischer

d.

Jacob

Question number: 25

» Cell Structure and Function » Chemical Constituents of Living Cells » Biomolecules-Structure and Function

MCQ▾

Question

Which one belongs to hydrolase group?

Choices

Choice (4) Response

a.

Enolase

b.

Citrate synthetase

c.

Amylase

d.

Transaminase

Question number: 26

» Cell Structure and Function » Chemical Constituents of Living Cells » Enzymes - Types, Properties, Enzyme Action

MCQ▾

Question

Jacob and Monod named those enzymes allosteric whose activity is regulated by

Choices

Choice (4) Response

a.

End product

b.

Coenzymes

c.

Substrate

d.

Prosthetic groups

Question number: 27

» Cell Structure and Function » Chemical Constituents of Living Cells » Biomolecules-Structure and Function

MCQ▾

Question

DNA strands are antiparallel because of the presence of

Choices

Choice (4) Response

a.

H-bonds

b.

Disulfide bonds

c.

Phosphate-diester bonds

d.

Peptide bonds

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