Section 2(f) Respiration - 2.34 to 2.39 - Anaerobic+Practical

What is anaerobic respiration?

• Respiration that requires oxygen

• Respiration that occurs only in plants

• Respiration without oxygen

• Respiration in mitochondria only

Which substance is produced during anaerobic respiration in animals?

• Carbon dioxide

• Ethanol

• Lactic acid

• Oxygen

Which substances are produced during anaerobic respiration in plants or yeast?

• Lactic acid and oxygen

• Ethanol and carbon dioxide

• Water and oxygen

• Carbon dioxide and water

Compared to aerobic respiration, anaerobic respiration releases:

• More energy

• The same amount of energy

• Less energy

• No energy

Why does anaerobic respiration release less energy than aerobic respiration?

• Oxygen is not present to break down glucose completely

• Glucose is not used

• ATP is not produced

• Heat is not released

During vigorous exercise, muscles may switch to anaerobic respiration because:

• There is too much oxygen

• Oxygen supply is insufficient

• Glucose is absent

• Carbon dioxide increases

Which statement correctly explains muscle fatigue?

• Oxygen builds up in muscles

• Lactic acid accumulates in muscles

• ATP increases rapidly

• Carbon dioxide is removed too quickly

What is meant by oxygen debt?

• Oxygen stored in the lungs

• Extra oxygen required to remove lactic acid after exercise

• Lack of oxygen during breathing

• Oxygen used in photosynthesis

Which process converts lactic acid back into glucose?

• Photosynthesis

• Respiration

• Recovery processes using oxygen

• Diffusion

Which type of respiration produces carbon dioxide in both plants and animals?

• Anaerobic only

• Aerobic only

• Both aerobic and anaerobic in animals

• Neither type