AP (Advanced Placement) Biology: Questions 520 - 522 of 868

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Question number: 520

» Microbiology

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MCQ▾

Question

Microorganisms varies in their sizes. Why is the presence of a cestode parasite, which can reach lengths measured in meters, typically diagnosed by microbiologists?

Choices

Choice (5)Response

a.

Because the subcellular structures used to differentiate species are only observed by microscope.

b.

Because these organisms are frequently reproduce asexually like bacteria.

c.

Because the ova found in the stool samples usually used for identification are microscopic in size.

d.

Because of tradition; better immunological diagnostic methods can now be used more efficiently.

e.

Because these organisms inhabit the digestive tract and are best observed by endoscopy.

Question number: 521

» DNA and Protein Synthesis

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MCQ▾

Question

DNA is

Choices

Choice (5)Response

a.

Electrical impulse

b.

Positively charged

c.

Negatively charged

d.

No charge

e.

Neutral

Question number: 522

» Specialized Cell and Tissues

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MCQ▾

Question

Following statement is false about the sodium-potassium pump

Choices

Choice (5)Response

a.

Two potassium atoms imported and three sodium atoms are exported.

b.

The sodium concentration is higher outside then inside of the cell.

c.

The pump is antiport type.

d.

The potassium concentration is higher outside then inside of the cell. .

e.

The energy currency ATP is required for the pump to function properly.

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