AP (Advanced Placement) Biology: Questions 471 - 475 of 902

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Question 471

Question

MCQ▾

It is the important component of the RNA polymerase holoenzyme that provides specificity for the precise binding with DNA molecule in eukaryotes

Choices

Choice (5)Response

a.

Subunit

b.

The TFIID complex factor

c.

RNA polymerase I

d.

The chains

e.

The chains

Question 472

Question

MCQ▾

Both viruses and rickettsia

Choices

Choice (5)Response

a.

Both are in between living and non-living

b.

Are obligate intracellular parasites

c.

Spread host to host by sexual contact

d.

Are facultative intracellular parasites

e.

Metabolize resources from soil

Question 473

Question

MCQ▾

Some bacterial plasmids are involved in nitrogen-fixing pathway in a host cell. This type of plasmid is considered as a

Choices

Choice (5)Response

a.

F plasmid

b.

Virulence

c.

Metabolic

d.

R plasmid

e.

Hfr plasmid

Question 474

Question

MCQ▾

Which of the following type of mutation in bacteria restores a phenotype similar to the wild type but do not restore the original genotype?

Choices

Choice (5)Response

a.

Deletion mutation

b.

Reversion mutation

c.

Back mutation

d.

Frame shift mutation

e.

Conditional mutation

Question 475

Question

MCQ▾

Length of one turn of DNA

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

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