wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Passive transport of molecules across the cell membrane is by

A
diffusion only
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
osmosis only
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
both diffusion and osmosis
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
neither diffusion nor osmosis
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C both diffusion and osmosis
When molecules are transported along the concentration gradient (from higher to lower concentration), there is no utilization of energy. This is called passive transport.

Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration until a level of equilibrium is reached.

Osmosis is the movement of solvent molecules across a selectively permeable membrane from a region of its higher concentration to a region of its lower concentration till a level of equilibrium is reached.
Both of these processes do not require energy and are examples of passive transport. So, passive transport of molecules across the cell membrane is carried out by both diffusion and osmosis.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon