B9 Respiration Flashcards
Give three differences between aerobic and anaerobic respiration.
- Oxygen is used in aerobic respiration.
- More energy is released from aerobic respiration.
- Carbon dioxide and water are produced in aerobic respiration. Lactic acid is produced in anaerobic respiration (in animals).
Give three ways in which the heart rate of a fitter person differs from an unfit person during exercise.
A fit person has:
a) A lower resting heart rate
b) A lower heart rate during exercise
c) A quicker recovery time back to resting heart rate.
Why does heart rate increase during exercise?
- more oxygen to muscles
- more glucose to muscles
- faster removal of carbon dioxide
- faster removal of lactic acid
Compared with chickens kept outside, chickens kept inside in cages lose less energy because they…
are warmer and move less.
Why is it better to do an investigation on the affects of exercise on blood flow indoors on an exercise cycle than to go outdoors on the road?
Do not include safety reasons.
- An exercise cycle can maintain constant speeds or efforts.
- Indoors can maintain a constant temperature.
- Unaffected by weather e.g. wind, rain, snow.
Name two substances needed in larger amounts by muscles during vigorous exercise than when resting.
- Oxygen
2. Glucose
Oxygen and glucose are needed by muscles to:
a) make more lactic acid
b) respire aerobically
c) make more glycogen
b) respire aerobically
Which two substances need to be removed from the muscles in larger amounts during vigorous exericse?
a) Amino acids
b) Carbon dioxide
c) Glycogen
d) Lactic acid
b) Carbon dioxide
d) Lactic acid
One way to increase the total blood flow is for the heart to pump out a larger volume of blood each beat.
Give one other way to increase the blood flow.
Increased heart rate.
Aerobic respiration produces the gas ____.
carbon dioxide
Aerobic respiration uses the gas ____.
oxygen
Does anaerobic respiration use oxygen?
No.
Does anaerobic respiration in animals produce carbon dioxide?
No.
Lactic acid only is produced
