AP (Advanced Placement) Biology: Questions 515 - 519 of 868

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Question number: 515

» DNA and Protein Synthesis

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MCQ▾

Question

Melting of DNA at an elevated temperature of 700 C is primarily due to the breakdown of

Choices

Choice (5)Response

a.

Phosphodiester bonds

b.

Disulphide bonds

c.

Glycosidic bonds

d.

Phosphoester bonds

e.

Hydrogen bonds

Question number: 516

» Digestive & Excretory Systems

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MCQ▾

Question

Which of the following is not excreted from the blood by the kidneys?

Choices

Choice (5)Response

a.

Creatinine

b.

Wastes from drug metabolism

c.

Uric acid

d.

Wastes from protein synthesis

e.

Urea

Question number: 517

» Circulatory, Immune & Lymphatic Systems

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MCQ▾

Question

The cell that carries the greatest phagocytic activity of the body is the

Choices

Choice (5)Response

a.

Leukocyte

b.

Lymphocyte

c.

Neutrophil

d.

Erythrocyte

e.

Macrophage

Question number: 518

» Digestive & Excretory Systems

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MCQ▾

Question

Which of the following statement is true regarding mechanism involved in the loop of Henle?

Choices

Choice (5)Response

a.

Water enters the urine in the descending loop.

b.

Water, sodium ions, and potassium ions leave the glomerular filtrate in the descending portion.

c.

Sodium and chlorine ions leave the glomerular filtrate in the ascending loop.

d.

Water leaves the urine in the ascending loop.

e.

Proteins are absorbed back into the blood in both the ascending and descending loops.

Question number: 519

» Genetics

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MCQ▾

Question

Given condition is an example of incomplete dominance

Choices

Choice (5)Response

a.

A person without hair who has two normal parents

b.

A person with medium-thick hair from a parent with thin hair and a parent with thick hair

c.

A person with short toes who has parents with long toes

d.

A woman with blood group O and Rh+

e.

A man with blood group AB

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