B1.3 Respiration

Question 1

Carbohydrate

Answer 1

Glucose is used for energy

Amylase breaks starch into glucose

Question 2

Protein

Answer 2

Used for growth and repair

Protease breaks protein into amino acids

Question 3

Lipids

Answer 3

Store of energy, insulation, buoyancy

Lipase breaks lipids into 3 fatty acids and 1 glycerol

Question 4

How is food getting into body cells

Answer 4

The digested food is absorbed into blood stream

Question 5

ATP

Answer 5

An energy store produced in respiration

Question 6

What is energy used for

Answer 6

Synthesising larger molecules
Movement
To stay warm

Question 7

Anaerobic respiration

Answer 7

Cardiac output can’t meet oxygen demand so glucose is broken down into poisonous lactic acid which causes fatigue

Question 8

Cons of anaerobic respiration

Answer 8

Produces less ATP
Lactic acid causes pain and fatigue
Oxygen debt needs to be repaid to fully break down glucose

Question 9

Fermentation

Answer 9

Anaerobic respiration in microorganisms and plants

glucose -> ethanol + carbon dioxide

Question 10

What type of reaction is respiration

Answer 10

Exothermic