Subject SAT (College Board) Biology: Questions 618 - 622 of 824

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Question number: 618

» DNA and Evolution

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MCQ▾

Question

Spot the enzymes eliminate supercoiling in replicating DNA ahead of the replication fork?

Choices

Choice (5)Response

a.

DNA polymerases

b.

Helicases

c.

Primases

d.

Topoisomerases

e.

None of the above

Question number: 619

» Organization and Regulation

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MCQ▾

Question

Carbohydrates are commonly found as starch as a storage material. Which of the following properties (from A- E) of starch make it useful as a storage material?

  1. Easily translocated

  2. Chemically non-reactive

  3. Osmotically inactive

  4. Synthesized during photosynthesis

  5. Easily digested by animals

Choices

Choice (5)Response

a.

1,4, 5

b.

2,4

c.

1,3, 5

d.

1,5

e.

All of the above

Question number: 620

» DNA and Evolution

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MCQ▾

Question

The fundamental principle of embryonic development were pronounced by

Choices

Choice (5)Response

a.

Morgan

b.

Haeckel

c.

Von Baer

d.

Weismann

e.

Question does not provide sufficient data or is vague

Question number: 621

» Mendel and Hereditary

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MCQ▾

Question

The contrasting pairs of factors in Mendelian crosses are called

Choices

Choice (5)Response

a.

multiple alleles

b.

alloloci

c.

polygenic inheritance.

d.

co dominance

e.

Question does not provide sufficient data or is vague

Question number: 622

» Cell

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MCQ▾

Question

Some enzymes require the presence of a non-protein substance if they are to catalyse a reaction. Which of the following terms is the best general term for such a substance?

Choices

Choice (5)Response

a.

Cofactor

b.

Prosthetic group

c.

Coenzyme

d.

Modulator

e.

Question does not provide sufficient data or is vague

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