Movement into and out of Cells — Practice Questions

Question 1

The spreading of particles from high to low concentration is:

Accepted Answer

diffusion — That is diffusion.

Question 2

The movement of water across a partially permeable membrane is:

Accepted Answer

osmosis — Water movement across a membrane is osmosis.

Question 3

Which process moves substances AGAINST the concentration gradient using energy?

Accepted Answer

Active transport — Active transport uses energy to go against the gradient.

Question 4

Osmosis is really the diffusion of:

Accepted Answer

water — Osmosis is the diffusion of water.

Question 5

Which process does NOT require energy from the cell?

Accepted Answer

Diffusion — Diffusion is passive — no energy needed.

Question 6

Particles diffuse from a region of ___ concentration to ___ concentration.

Accepted Answer

high, low — Diffusion goes from high to low concentration.