Which process allows gases to move in and out of cells without using energy?
A
Active transport
B
Diffusion
C
Endocytosis
D
Exocytosis
Correct Answer: Option B — Diffusion
Explanation:
Diffusion is the passive movement of molecules such as oxygen and carbon dioxide from an area of higher concentration to lower concentration...
Diffusion is the passive movement of molecules such as oxygen and carbon dioxide from an area of higher concentration to lower concentration across cell membranes, requiring no cellular energy expenditure to occur naturally.