Cell Homeostasis

Question 1

Which statement describes the ability of the cell membrane to allow various substance to move through it?

Revolt · Accepted Answer

The cell membrane is selectively permeable.

Question 2

Which best describes dynamic equilibrium?

Revolt · Accepted Answer

Particles are moving into and out of the cell, but their concentrations remain stable.

Question 3

Which homeostatic process moves particles against a concentration gradient?

Revolt · Accepted Answer

active transport

Question 4

Which movement of particles would be most affected by a disorder that causes damage to carrier proteins?

Revolt · Accepted Answer

active transport

Question 5

The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.What change would most improve the usefulness of the graph?

Revolt · Accepted Answer

Replace the concentration descriptions with actual values.

Question 6

Which motion of particles across a membrane requires energy?

Revolt · Accepted Answer

from low concentration to high concentration

Question 7

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?

Revolt · Accepted Answer

It would swell and then burst.

Question 8

Which adaptation helps polar bears maintain a constant internal temperature (thermal homeostasis) in cold weather?

Revolt · Accepted Answer

blubber

Question 9

For diffusion to occur, which condition must be met?

Revolt · Accepted Answer

A concentration gradient must exist.

Question 10

Which motion of particles across a membrane requires energy?

Cell Homeostasis Answers

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