Answer to Question #100947 in Chemistry for Abhishek

Question

Describe different modes through which cell membrane controls the transport of ingoing and outgoing molecules?

Answer 1

In cellular biology, active transport is the movement of molecules across a membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement.

Passive transport is a movement of ions and other atomic or molecular substances across cell membranes without need of energy input. Unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.