A - Enzymes and respiration OLD

Question 1

Respiration definition?

Answer 1

Process of RELEASING ENERGY FROM THE BREAKDOWN OF GLUCOSE, which goes on IN EVERY CELL

IT IS NOT BREATHING IN AND OUT

Question 2

Aerobic respiration equation?

Answer 2

Glucose + oxygen ➡️ carbon dioxide + water + ENERGY

Question 3

Aerobic respiration definition?

Answer 3

Respiration using OXYGEN - it uses plenty of it. This process goes on ALL THE TIME in PLANTS and ANIMALS

Question 4

Anaerobic respiration definition?

Answer 4

Respiration with out OXYGEN. This is what happens when you do vigorous exercise and your body can’t supply enough oxygen to your muscles. It is THE INCOMPLETE BREAK DOWN OF GLUCOSE, which PRODUCES LACTIC ACID

Question 5

Anaerobic respiration equation

Answer 5

Glucose ➡️ energy + lactic acid

Question 6

Why does the heart rate increase when doing exercise?

Answer 6

Because the muscle activity requires MORE GLUCOSE AND OXYGEN to be supplied to the muscle cells.

Question 7

What is oxygen debt?

Answer 7

After anaerobic respiration, when you stop exceeding you have to ‘REPAY’ the oxygen that didn’t get to your muscles in time.

Question 8

What can the release of energy from respiration be used for? (4)

Answer 8

• To build up larger molecules from smaller ones
• In animals, to allow muscles to contract
• In mammals and birds the energy is used to keep their body temperature steady
• In plants to build sugars, nitrates and other nutrients into amino acids which are then built up into proteins