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.

Question 2

Concentration gradient

Answer 2

An imaginary slope from high concentration to low concentration

Question 3

Osmosis

Answer 3

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

Question 4

Partially permeable membrane

Answer 4

A membrane that only allows certain substances to pass through

Question 5

Turgid

Answer 5

A description of a plant cell that’s tight and firm

Question 6

Turgor pressure

Answer 6

The pressure of the water pushing outwards on a plant cell wall

Question 7

Flaccid

Answer 7

A description of a plant cell that is soft

Question 8

Plasmolysed

Answer 8

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

Question 9

Active transport

Answer 9

The net movement of molecules or ions through a cell membrane from a region of lower concentration to a region of higher concentration

Question 10

Protein carriers / carrier proteins

Answer 10

Protein molecules in a cell membrane that can use energy to change shape and move ions or molecules into or out of the cell