Fermentation and Its Types

What is the primary purpose of fermentation in cellular respiration?

• To produce water and carbon dioxide

• To completely oxidize glucose

• To increase oxygen supply

• To release energy in the absence of oxygen

Which of the following is a product of alcohol fermentation?

• Oxygen

• Glucose

• Ethanol

• Lactic acid

Why is aerobic respiration generally preferred over alcohol fermentation?

• It produces ethanol

• It produces more energy

• It requires less oxygen

• It is faster

How does yeast contribute to bread making?

• By consuming ethanol

• By producing lactic acid

• By releasing oxygen

• By producing carbon dioxide

What adaptation allows paddy plants to survive in waterlogged conditions?

• Production of lactic acid

• High tolerance for ethanol

• Rapid glucose consumption

• Increased oxygen absorption

What enzyme do paddy plants produce to break down ethanol?

• Lactase

• Alcohol dehydrogenase

• Amylase

• Catalase

During vigorous activity, what causes muscle cramps and fatigue?

• Excess oxygen

• Accumulation of lactic acid

• High carbon dioxide levels

• Lack of glucose

What is the term for the condition when muscles lack sufficient oxygen during exercise?

• Oxygen debt

• Anaerobic threshold

• Aerobic capacity

• Respiratory distress

What happens during the recovery period after exercise?

• Energy is stored as fat

• Lactic acid is converted to glucose

• Oxygen intake decreases immediately

• Lactic acid is oxidized to carbon dioxide and water

Why do we breathe heavily after intense exercise?

• To conserve energy

• To oxidize lactic acid

• To increase carbon dioxide levels

• To reduce body temperature