Cell Homeostasis Answers

10 verified answers1 views
1
Free Preview

Which homeostatic process moves particles against a concentration gradient?

A
dynamic equilibrium
B
passive transport
C
osmosis
D
active transport
5

How does the contractile vacuole in a single-celled organism function to maintain homeostasis?

A
It pumps water into the cell.
B
It pumps water out of the cell.
C
It pumps solutes into the cell.
D
It pumps solutes out of the cell.
6

Which motion of particles across a membrane requires energy?

A
from high concentration to low concentration
B
from low concentration to high concentration
C
with no concentration gradient
D
through dynamic equilibrium
7

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

A
The cell membrane is selectively permeable.
B
The cell membrane is composed of lipids and phosphates.
C
The cell membrane is both hydrophilic and hydrophobic.
D
The cell membrane is a bilayer structure.
10

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?

Question illustration
A
Replace the concentration descriptions with actual values.
B
Plot contractions per second instead of contractions per minute.
C
Remove the plotted points and just keep the line.
D
Remove the name of the organism from the title.

Did you find these answers helpful?

Cell Homeostasis Answers — FL-2000310-Biology 1…