In: Anatomy and Physiology
Diffusion of nutrients across a cell membrane can be called a form of
Multiple Choice
passive transport.
active transport.
exocytosis.
osmosis.
bulk transpor
The cell membrane is the bilipid layer surrounding the cell that
selectively allows substances to pass through it.
- Passive transport is the movement of substances through the cell
membrane without use of energy. Diffusion is the movement of
nutrients including gases, ions, water molecules to the area of
high concentration without use of energy. Diffusion is the form of
passive transport. This option is correct.
- The Active transport requires energy for transportation of
substances through it. Diffusion does not require energy so this
option is incorrect.
- Exocytosis is a form of active transport that releases substances
out of the cell. This option is incorrect.
- Osmosis is the movement of solvent particles to the area of
high concentration. Diffusion involves movement of solute as well
as solvent so this option is incorrect.
- Bulk transport is the movement of substances such as ions back
into the membrane with the flow of water. This option is
incorrect.
Answer : passive transport