Which of the these statements is incorrect ?

Options

A. Glycoysis operates as long as it is supplied with NAD that can pick up hydrogen atoms
B. Glycolysis occurs in cytosol
C. Enzymes or TCA cylce are present in mitochondrial matrix
D. Oxidative phosphorylation takes place in outer mitochondrial membrane

Answer

To determine which statement is incorrect regarding respiration in plants, let's analyze each statement step by step:

1. **Statement 1: Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.**
- **Analysis**: Glycolysis is a metabolic pathway that breaks down glucose to produce energy. It requires NAD+ to accept electrons and protons (hydrogen atoms) during the process. If NAD+ is not available, glycolysis cannot proceed. Therefore, this statement is correct.

2. **Statement 2: Glycolysis occurs in cytosol.**
- **Analysis**: Glycolysis takes place in the cytoplasm of the cell, which is also referred to as the cytosol. This is where the enzymes necessary for glycolysis are located. Thus, this statement is also correct.

3. **Statement 3: Enzymes of TCA cycle (Krebs cycle) are present in mitochondrial matrix.**
- **Analysis**: The TCA cycle, also known as the Krebs cycle, occurs in the mitochondrial matrix. This is where the enzymes that facilitate the reactions of the TCA cycle are found. Therefore, this statement is correct.

4. **Statement 4: Oxidative Phosphorylation takes place in the outer mitochondrial membrane.**
- **Analysis**: Oxidative phosphorylation is a process that occurs in the inner mitochondrial membrane, specifically within the cristae, where the electron transport chain is located. Therefore, this statement is incorrect.

Based on the analysis, the incorrect statement is:

**Answer**: Statement 4 is incorrect because oxidative phosphorylation occurs in the inner mitochondrial membrane, not the outer mitochondrial membrane.

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