Question

Active absorption occurs the concentration gradient whereas passive absorption occurs the concentration gradient.

• A. against
• B. towards
• C. inside
• D. outside

Answer 1

Answer: (A), (B)

towards

There are two types of absorption: passive and active absorptions. Passive absorption involves movement of molecules along the concentration gradient without using energy from ATP.
Active absorption involves movement of substances against the concentration gradient by using the energy stored in ATP.