Pop Quiz 2 - Respiration

A boy feels pain and tiredness in his legs after running to school.

What is a possible cause of this?

• Glucose has tuned to glycogen in his legs.

• Lactic acid has built up in his muscles.

• The exercise has increased his heart rate.

• Urea has formed in his blood.

Which gas is produced during aerobic respiration?

• carbon dioxide

• carbon monoxide

• nitrogen

• oxygen

According to the word equation for aerobic respiration shown, what are the waste products?

• carbon dioxide only

• carbon dioxide and water only

• water and energy only

• carbon dioxide and water and energy

A long distance runner suffers pain in his leg during a race. Which substance causes this pain?

• glucose

• lactic acid

• protein

• urea

Which word equation represents anaerobic respiration in muscles?

• glucose → lactic acid + energy

• glucose → lactic acid + carbon dioxide + energy

• glucose + oxygen → carbon dioxide + water + energy

• glucose + oxygen → lactic acid + water + energy

Which route does carbon dioxide follow as it is removed from the body?

• alveoli → bronchioles → larynx → trachea

• alveoli → bronchioles → trachea→ larynx

• bronchioles → alveoli → trachea → larynx

• bronchioles → alveoli → larynx → trachea

Which component of cigarette smoke is most likely to cause lung cancer?

• carbon dioxide

• carbon monoxide

• nicotine

• tar

A man completes a 400m race. His muscles begin to hurt.

Which row describes the substance produced in the muscles when they hurt and the correct type of respiration taking place?

• A

• B

• C

• D

The diagram shows the number of units of carbon monoxide in the blood of three people who smoke different numbers of cigarettes. Which statement is correct?

• If you smoke, all the carbon monoxide comes from cigarettes.

• The person smoking 20 cigarettes has 40 units of carbon monoxide in their blood.

• The person smoking 40 cigarettes increases his carbon monoxide level by about 34 units.

• The person who does not smoke has no carbon monoxide in their blood.

The graph shows the short-term effect of smoking on heart rate.

Which substance in cigarette smoke is the main cause of the change in heart rate between 10 to 18 minutes

• carbon monoxide

• nicotine

• smoke particles

• tar