Where do we get energy from?

• Cellular respiration

• Breathing

The energy from muscular contraction comes from 

• our breathing

• cellular respiration

• our red blood cells

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What type of respiration does NOT require oxygen?

• Aerobic

• Anaerobic

Anaerobic respiration 

• is more efficient than aerobic respiration 

• makes no ATP for the cell 

• is best option our cells have when oxygen is not available 

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Lactic acid is a waste product

• True 

• False

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After lactic acid is produced from our muscles cells, our blood transports lactic acid

• to our liver so our liver can convert it into a source to help make ATP

• to our liver so our liver will use lactic acid to make carbon dioxide and oxygen 

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To see the effect of exercise on the body, we can

• measure our pulse rate before and after exercise 

• measure our breathing rate when we first wake up in the morning and before we go to bed

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What are 2 things you learned from this video?