1.2 Gas exchange and respiration

Question 1

Cellular respiration

Answer 1

The process by which your cells make energy (and carbo dioxide and water vapour) from glucose, with the help of oxygen

Question 2

Lung capillaries

Answer 2

Tiny blood vessels that surround the alveoli

Question 3

Diffusion

Answer 3

The movement of substances from an area where they are in a higher concentration to an area where they are in lower concentration, until the concentration of the substances is equal in both areas

Question 4

Osmosis

Answer 4

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