First slide

Means of Transport

Question

Mark the correct statement?

Easy

A

Larger substances can diffuse faster than smaller ones.
B

Hydrophobic substances cannot pass through the cell membrane easily.
C

Hydrophilic substances cannot pass through the cell membrane easily.
D

Membrane permeability does not affect diffusion rates.

Solution

The diffusion rate depends on the size of the substances; obviously smaller substances diffuse faster. The diffusion of any substance across a membrane also depends on its solubility in lipids, the major constituent of the membrane. Substances soluble in lipids (hydrophobic) diffuse through the membrane faster. Substances that have a hydrophilic moiety, find it difficult to pass through the membrane; their movement has to be facilitated.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App