Respiration

1. What is the difference between aerobic and anearobic respiration?
Aerobic respiration is with oxygen to help breaking down the glucose and anaerobic respiration is without oxygen.

2. What is the end product of anaerobic respiration in animals?
Lactic Acid is the end product of anaerobic respiration in animals. It’s the third chemical in breaking down the glucose into chemicals.

3. Why is this end product dangerous?
Lactic Acid is poisonous. You can’t keep it in your cells for long, they will be damaged.

4. What type of person builds up Lactic Acid in their muscles?
A sprinter builds up Lactic Acid in his muscles. That way you can sprint faster for a short period of time.

5. What is an oxygen debt and why must it be paid back at the end of a race?
When you did anaerobic respiration for a while, the oxygen missed is an oxygen debt. It needs to be paid back to break down glucose further, to eventually CO2 and H2O.

6. How do long distance runners deal with an oxygen debt?
They breath evenly and relaxed, so the oxygen can help breaking down Glucose again.

7. What is anaerobic respiration in plants called?
It’s also called fermentation.

8. What are the end products alcohol and carbon dioxide used for?
Alcohol is used to drink and Carbon Dioxide is not really used for anything. It’s in the air and it’s polluting.

9. What type of respiration produces the most energy? Explain why.
Aerobic respiration produces the most energy, because oxygen is being let in. More oxygen means more energy.

10. Look at page 313, what is the source of sugar for wine and for beer?
The sugar used for wine and beer is maltose. Barley grains are malted, they are allowed to germinate for a few days. Enzymes break down the starch in the grains into a sugar called maltose.

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