AP (Advanced Placement) Biology: Questions 669 - 674 of 902

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Question 669

Question

MCQ▾

Chromatin is composed of

Choices

Choice (5)Response

a.

Nucleosomes

b.

Histones

c.

Nucleic acid only

d.

Nucleic acid and proteins

e.

Proeins only

Question 670

Question

MCQ▾

Schwann cells are a major component of

Choices

Choice (5)Response

a.

The excretory system

b.

The nervous system

c.

The lymphatic system

d.

The immune system

e.

The digestive system

Question 671

Question

MCQ▾

Cell wall of fungus is made up of chitin while in bacteria it is

Choices

Choice (5)Response

a.

Silica

b.

Pectin

c.

Carbohydrate

d.

Cellulose

e.

Peptidoglycan

Question 672

Question

MCQ▾

Name the sigma factor which is used for the promotor recognition.

Choices

Choice (5)Response

a.

Sigma 70

b.

Sigma 38

c.

Sigma 80

d.

Sigma 60

e.

Sigma 45

Question 673

Question

MCQ▾

The function of the nodes of Ranvier is to

Choices

Choice (5)Response

a.

Decrease the speed of action potential

b.

Increase the rate of impulse conduction

c.

Decrease the respiration rate

d.

Increase the heart rate for higher blood supply

e.

Increase the connectivity between neurons in CNS

Question 674

Question

MCQ▾

The following option defines phenotypic cure. It

Choices

Choice (5)Response

a.

Can cause a disorder which is passed on to the next generation

b.

Can replace the defective gene in the progeny

c.

Can suppress the defective gene in a carrier

d.

Can correct the defective expression

e.

Can suppress the defective gene in the progeny

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