Assertion : Fermentation is incomplete oxidation of glucose
Reason: Pyruvic acid decarboxylase, Alcoholic dehydrogenase catalyze the reaction

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but Ris not correct explanation of A
C. A is true but R is false
D. A and R are false

Answer

To solve the question, we need to analyze the assertion and reason provided:

### Step 1: Understand the Assertion
The assertion states that "Fermentation is incomplete oxidation of glucose."
- Fermentation is a metabolic process that occurs in the absence of oxygen (anaerobic conditions). During fermentation, glucose is partially broken down to produce energy, resulting in the formation of byproducts such as ethanol or lactic acid, rather than fully oxidizing it to carbon dioxide and water.
- Therefore, the assertion is **true**.

### Step 2: Understand the Reason
The reason states that "Pyruvic acid decarboxylase and Alcoholic dehydrogenase catalyze the reaction."
- In the fermentation process, specifically alcoholic fermentation, pyruvate (the end product of glycolysis) is converted into acetaldehyde by the enzyme pyruvate decarboxylase, which releases carbon dioxide.
- Then, acetaldehyde is reduced to ethanol by the enzyme alcoholic dehydrogenase.
- Therefore, the reason is also **true**.

### Step 3: Determine the Relationship
Now we need to determine if the reason correctly explains the assertion.
- The assertion is about fermentation being an incomplete oxidation of glucose, while the reason explains the specific enzymes involved in the fermentation process.
- Since the reason provides insight into how fermentation occurs (the role of specific enzymes), it does indeed explain the assertion.

### Conclusion
Both the assertion and reason are true, and the reason correctly explains the assertion.

### Final Answer:
Both the assertion and reason are true, and the reason is a correct explanation of the assertion.

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