Consider the following statements:
Anaerobic breakdown of glucose in cells results in formation of which of the following compounds?
1. Ethanol
2. Lactic Acid
3. Carbon dioxide
4. ATP
How many of the statement given above are correct?
Options
A1, 2, 3 and 4
B1 and 2 only
C1, 2 and 3
D2 and 3 only
Show AnswerHide Answer
Correct Answer
D2 and 3 only
Model Answer
Official answer key: A. The answer shown above (D) is the academy’s own.
Anaerobic breakdown of glucose occurs in the absence of oxygen and is known as anaerobic respiration or fermentation.
Anaerobic respiration produces two ATP molecules for every molecule of glucose. This is because there is no conversion of NADH to ATP anaerobic conditions.
Significance: This process occurs in muscle cells during intense exercise when oxygen supply is insufficient, leading to the production of lactic acid, which can cause muscle fatigue.
In Yeast and Some Bacteria
Process: Alcoholic Fermentation
End Products: Ethanol (alcohol) and carbon dioxide
Significance: This process is utilized in brewing, winemaking, and baking.
Diagram of glycolysis (glucose to pyruvate, with ATP) followed by alcoholic fermentation to ethyl alcohol and CO2, or lactic acid fermentation to lactate.
