Question

The given diagram represents ethanol fermentation. Identify the labelings and the reactions occurring at $1, 2$ and $3$

• A. 1. The glucose breaks down into two pyruvates
  2. The pyruvate is broken down into acetaldehyde by releasing $CO_{2}$
  3. The acetaldehyde is then converted to ethanol
• B. 1. The glucose breaks down into two pyruvates
  2. The acetaldehyde is then converted to ethanol
  3. The pyruvate is broken down into acetaldehyde by releasing $CO_{2}$
• C. 1. The glucose breaks down into two pyruvates
  2. The pyruvate is broken down into acetaldehyde by releasing $NH_{3}$
  3. The pyruvate is broken down into acetaldehyde by releasing $CO_{2}$
• D. 1. The glucose breaks down into two pyruvates
  2. The pyruvate is broken down into acetaldehyde by releasing $NH_{3}$
  3. The acetaldehyde is then converted to ethanol

Answer 1

Answer: (A)

Correct answer is (a) 1. The glucose breaks down into two pyruvates
2. The pyruvate is broken down into acetaldehyde by releasing $CO_{2}$
3. The acetaldehyde is then converted to ethanol