AP (Advanced Placement) Biology: Questions 527 - 530 of 868

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Question number: 527

» Evolution

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MCQ▾

Question

Let us assume a small flock of birds is blown to a remote island where its species has not been before. This is an example of

Choices

Choice (5)Response

a.

Genetic drift

b.

Bottleneck effect

c.

Hardy-Weinberg law

d.

Disruptive selection

e.

Founder effect

Question number: 528

» Evolution

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MCQ▾

Question

Carbon 14 (14C) has a half-life of about 5,730 years. What does it stands for?

Choices

Choice (5)Response

a.

14C must be regenerated continuously for determining half life

b.

14C is used for dating organic materials only

c.

14C has fully decayed in 200 billion years ago

d.

14C is used for dating only plants

e.

14C is found in inorganic materials only

Question number: 529

» Molecular Biology of Eukaryotes

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MCQ▾

Question

If inversion mutations occur in Intergenic spacer (IGS) DNA than what would possibly happen to the resulting phenotype?

Choices

Choice (5)Response

a.

Mutations in IGS has no effect.

b.

These mutations are lethal.

c.

Expression of this DNA is important for TFs and their specificity.

d.

Spacer DNA plays an inhibitor role in integrating the functional consequences ofRNA polymerase.

e.

Inversion mutations change a constitutive gene into a repressible gene.

Question number: 530

» Specialized Cell and Tissues

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MCQ▾

Question

What is the effect of fever on the growth rate of fibroblasts?

Choices

Choice (5)Response

a.

Fibroblast growth rate is unaffected by up and down normal temperature.

b.

Decreased body temperature has no effect on the fibroblast growth rate.

c.

Moderately increased body temperature increases the replication rate

d.

Increased temperature has no effect on the fibroblast.

e.

Moderately decreased body temperature increases the replication rate.

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