AP (Advanced Placement) Biology: Questions 357 - 360 of 868

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Question number: 357

» Circulatory, Immune & Lymphatic Systems

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MCQ▾

Question

The pericardium and the pericardial fluid help in.

Choices

Choice (5)Response

a.

Protecting the heart from friction, shocks and keeps it moist

b.

Pumping the blood

c.

Receiving the blood from various parts of the body

d.

All of the above

e.

Question does not provide sufficient data or is vague

Question number: 358

» Eukaryotic Cell

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MCQ▾

Question

The chief difference between the erythrocytes of man and frog is

Choices

Choice (5)Response

a.

Human erythrocytes have more haemoglobin

b.

Human erythrocytes have less haemoglobin

c.

Human erythrocytes have more nuclei

d.

Human erythrocytes have no nuclei

e.

None of the above

Question number: 359

» Specialized Cell and Tissues

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MCQ▾

Question

The proper sequence of actions that bring phagocytic cells from circulation in the blood into infected tissues is

Choices

Choice (5)Response

a.

Tight binding → diapedesis → migration → rolling adhesion

b.

Tight binding → rolling adhesion → diapedesis → migration

c.

Migration → rolling adhesion → diapedesis → tight binding

d.

Diapedesis → rolling adhesion → migration → tight binding

e.

Rolling adhesion → tight binding → diapedesis → migration

Question number: 360

» Muscle & Skeletal Systems

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MCQ▾

Question

Regulation and initiation of heartbeat is indicated by.

Choices

Choice (5)Response

a.

SA Node - purkinje fibre - AV Node - Bundle of His muscle

b.

SA Node - AV Node - Bundle of His muscle - Purkinje fibre

c.

AV Node - bundle of His muscle - SA node - purkinje fibre

d.

Purkinje fibre - AV Node - SA node - Bundle of His muscle

e.

None of the above

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