Question

Movement of molecules from their lower concentration to their higher concentration is called

• A. diffusion
• B. osmosis
• C. active transport
• D. transpiration

Answer 1

The correct option is C

active transport

The correct option is C.

Explanation of the correct option:

Active transport is the movement of the molecules or ions of a substance from a region of their lower concentration to a region of their higher concentration region using energy.

Explanation of the incorrect options:

Option A:

1. It is the movement of the molecules or ions of a substance from a region of their higher concentration to a region of their lower concentration.
2. Cell energy is not required.

Option B :

Osmosis is a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane.

Option D :

Transpiration is the evaporation of water from plants through the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis.

Final answer: Movement of molecules from their lower concentration to their higher concentration is called active transport.