Movement into and out of cells

Question 1

diffusion

Answer 1

The net movement of particles from a region of higher concentration to a region of lower concentration as a result of random movement

Question 2

Osmosis

Answer 2

The net movement of water molecules from a region of higher concentration to a region of lower concentration, through a partially permeable membrane.

Question 3

Turgid
Flaccid

Answer 3

Tight and firm
Soft and loose

Question 4

Turgor pressure

Answer 4

The pressure of water molecules pushes outwards on the plant cell wall.

Question 5

Plasmolysed

Answer 5

A description of a cell in which the cell membrane tears away from the cell wall

Question 6

Active transport

Answer 6

The movement of molecules or ions through a cell membrane from a region of lower concentration to a region of higher concentration, Against the gradient, using energy from respiration

Question 7

Protein carriers

Answer 7

protein molecules in cell membranes that can use energy to change shape and move ions or molecules into or out of a cell