B9

Question 1

What is aerobic respiration?

Answer 1

During aerobic respiration, glucose(a sugar) reacts with oxygen. This reaction transfers energy that your cells can use. This energy is vital for everything that goes on in your body.

Question 2

Word equation for aerobic respiration

Answer 2

Glucose+ oxygen —-> carbon dioxide + water

Question 3

Chemical equation for aerobic respiration

Answer 3

C6H12O6 + 6O2 —-> 6CO2 + 6H2O

Question 4

The response to exercise

Answer 4

Your muscles also store glucose as the carbohydrate GLYCOGEN. Glycogen can rapidly be turned back into glucose to use during exercise

Question 5

What is anaerobic respiration?

Answer 5

Anaerobic respiration is not as efficient as aerobic as the glucose molecules aren’t broken down completely.

Question 6

End product of anaerobic respiration in animal cells

Answer 6

The end product is LACTIC ACID

Question 7

Equation for animal cells ( anaerobic respiration)

Answer 7

Glucose —-> Lactic Acid

Question 8

What is exothermic reaction?

Answer 8

Energy lost to the Environment

Question 9

What is muscle fatigue?

Answer 9

Using your muscle fibres vigorously for a long time can cause muscle fatigue and the muscles stop contracting efficiently. One cause of muscle fatigue is the build up of Lactic Acid. The build up of lactic acids in the muscles as a result of aerobic respiration can cause an OXYGEN DEBT.

Question 10

What is an oxygen debt?

Answer 10

If you’re fit, you lungs and heart can keep up with supplying a good amount of oxygen going to your muscles while you exercise for a long period of time. BUT if you’re unfit, your muscles will run short of oxygen much sooner