B2 Biology - Aerobic and anaerobic respiration

Question 1

what is aerobic respiration?

Answer 1

respiration using oxygen within animals and plants

Question 2

what is the word equation for aerobic respiration?

Answer 2

glucose + oxygen ——— co2 + water + ENERGY

Question 3

what are four examples of what the energy released by aerobic respiration is use for?

Answer 3

build up larger molecules from smaller ones
in animals to allow muscles to contract
mammals and birds - keep their body temp steady
in plants to build sugars and nutrients into amino acids then proteins

Question 4

what does physical activity do to your breathing and heart rate?

Answer 4

increases breathing rate, makes you breathe more to demand for more oxygen
increases heart rate

Question 5

what does your body require more of when doing exercise?

Answer 5

glucose and energy

Question 6

what is anaerobic respiration?

Answer 6

incomplete breakdown of glucose which produces lactic acid

Question 7

what does lactic acid do?

Answer 7

builds up in your muscles - painful

causes muscle fatigue

Question 8

what is oxygen debt?

Answer 8

after exercise blood flows through your muscles to remove the lactic acid by oxidising it to harmless co2 and water