Gas Exchange In Single-Celled Organisms Flashcards
1
Q
How do gases enter and exit the cell?
A
Oxygen and carbon dioxide are small enough to pass through the cell membrane
2
Q
What process is used in gas exchange in single-celled organisms?
A
Simple diffusion
3
Q
How do they diffuse into the cell?
A
Diffuse across a concentration gradient
4
Q
How does oxygen enter the single-cell organism?
A
Since there is a higher concentration of oxygen in the environment it diffuses across the membrane into the cell
5
Q
How does carbon dioxide leave the single-celled organism?
A
There is a higher concentration of carbon dioxide within the cell so it diffuses into the environment
6
Q
What is an example of a single-cell organism?
A
Amoeba proteus
