Respiration KS3

Which is the correct equation for aerobic respiration in humans?

• Glucose + Oxygen -> Carbon Dioxide + Water

• Glucose + Oxygen -> Carbon Dioxide

• Glucose -> Carbon Dioxide + Water

• Glucose -> Lactic Acid

During exercise, the heart rate increases to:

• Supply more lactic acid to the muscles for anaerobic respiration

• Supply more oxygen and glucose to the respiring cells

• Keep up with the pulse rate

Why does anaerobic respiration occur during hard exercise?

• There may be insufficient oxygen supplied to the muscle cells

• Carbon dioxide builds up in the respiring muscle cells

• Anaerobic respiration releases more energy from glucose than aerobic respiration.

Where in the cell do most aerobic respiration reactions happen?

• In the nucleus

• In the mitochondria

• In the cytoplasm

• In the cell wall

Which is the correct equation for anaerobic respiration in humans?

• Glucose + Lactic Acid -> Carbon Dioxide + Water

• Glucose -> Lactic Acid + Carbon Dioxide

• Glucose -> Lactic Acid

Respiration quotient, RQ, is calculated using the formula:

• RQ = carbon dioxide produced / oxygen used

• RQ = carbon dioxide used / oxygen produced

• RQ = glucose used / carbon dioxide produced

In terms of energy released from glucose:

• Anaerobic respiration releases more tan aerobic respiration

• Aerobic respiration releases more than anaerobic respiration.

• Aerobic and anaerobic respiration releases about the same amount

After hard exercise, panting allows excess lactic acid to be:

• Carried to the liver to be broken down

• Broken down to form carbon dioxide and water

• Converted into glucose for storage

Which substance, produced because of respiration, is used as an energy source?

• AGP

• ATP

• ADP

After hard exercise, increased heart rate allows:

• Lactic acid to be carried away to the liver.

• More carbon dioxide to reach the respiring cells.

• The incomplete breakdown of glucose.