Question

Active transport requires energy in order to move molecules ____________ the concentration gradient while simple and facilitated diffusion require no energy to move molecules __________ the concentration gradient.

Answer 1

Answer:

Active transport requires energy in order to move molecules against the concentration gradient while simple and facilitated diffusion require no energy to move molecules down the concentration gradient.

Explanation:

Active transport requires energy as the substance move from low concentration to high concentration (substances move against concentration gradient).

For example, Sodium-potassium pump.

Passive transport does not require energy as the substance move from high concentration to low concentration (substances move only down their concentration gradient).

It is of two types: Simple and facilitated transport.

For example, Osmosis.