Biology B2

Question 1

Define respiration.

Answer 1

A series of reactions occurring in all living cells in which glucose is broken down to release energy.

Question 2

Define glucose.

Answer 2

A simple sugar that is broken down in cells to release energy during respiration. It’s also produced during photosynthesis.

Question 3

What is the word equation for aerobic respiration?

_______+ __________ -> __________ + __________ + _________

Answer 3

Glucose + Oxygen -> carbon dioxide + water + energy

Question 4

What is carried in the blood? (3 points) what are they needed for?

Answer 4

Glucose and oxygen - needed for respiration

Carbon dioxide - the waste must be carried away from respiring cells

Question 5

What happens in diffusion?

Answer 5

Diffusion occurs when particles of a substance spread out, moving from an area where they are lower in concentration. The particles diffuse down a concentration gradient. Glucose, oxygen and carbon dioxide which all move between respiring cells & capillaries (tiny blood vessels).

Question 6

Define aerobic respiration.

Answer 6

Respiration that needs oxygen.