Question

Which one of the following does not help in molecule transport?

• A. Diffusion
• B. Osmosis
• C. Surface tension
• D. Active transport

Answer 1

Answer: (C)

Surface tension

Diffusion describes the movement of gasses and liquid molecules along the concentration gradient. Active transport involves the movement of molecules against the concentration gradient with the help of energy expenditure in the form of ATP. Surface tension is not involved in the transport of molecules but is an important force, that ensures movement of water as a sheet or mass.

So, the correct answer is option C.