NEET 2017 · Class 11

Respiration in Plants

Which statement is wrong for Krebs' cycle? (NEET 2017)

  1. (A)There is one point in the cycle where FAD+ is reduced to FADH2
  2. (B)During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised.
  3. (C)The cycle starts with condensation of acetyl group (acetyl CoA) with pyruvic acid to yield citric acid.
  4. (D)There are three points in the cycle where NAD+ is reduced to NADH + H+

The NCERT line that answers it

Verbatim line

The TCA cycle starts with the condensation of acetyl group with oxaloacetic acid (OAA) and water to yield citric acid (Figure 12.3).

Chapter
Respiration in Plants
Section
12.4.1 Tricarboxylic Acid Cycle
Page
5
Words matched
22 of 22

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that the TCA cycle starts with condensation of acetyl group with oxaloacetic acid (OAA), not pyruvic acid, which directly contradicts option C and proves it wrong.

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