AP (Advanced Placement) Biology: Questions 634 - 637 of 868

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Question number: 634

» Microbiology

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MCQ▾

Question

Bacteria frequently acquire antibiotic resistance by horizontal transfer. The most common mechanism of this acquisition is through

Choices

Choice (5)Response

a.

Exchange of equal-sized genome

b.

Endocytosis

c.

Transduction by bacteriophages

d.

Bacterial transformation

e.

Bacterial conjugation

Question number: 635

» Microbiology

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MCQ▾

Question

Which of the following statement is corrects that, how halogens provide disinfection?

Choices

Choice (5)Response

a.

By changing the osmotic balance between the interior and exterior of the cell

b.

By increasing membrane permeability, cause lysis of cell

c.

By disrupting cell wall synthesis

d.

By denaturing most organic materials of the cell

e.

By increasing the pH of the interior of the cell to very basic conditions

Question number: 636

» Genetics

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MCQ▾

Question

Klinefelter’s syndrome is indicated by a combination of XXY chromosome. This abnormality occurs due to

Choices

Choice (5)Response

a.

Genetic reversion

b.

Genetic duplication

c.

Genetic transition

d.

Genetic deletion

e.

Nondisjunction

Question number: 637

» Nervous & Endocrine Systems

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MCQ▾

Question

The posterior pituitary is responsible for the secretion of which hormones?

Choices

Choice (5)Response

a.

Oxytocin and Vasopressin

b.

Aldosterone and Nor-epinephrine

c.

TSH and ICSH

d.

Prolactin and Glucocorticoids

e.

LH and FSH

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