At the end of the Kreb's cycle, most of energy removed from glucose molecules is transferred to -

Options

A. `NADH+H^(+)//FADH+H^(+)`
B. ATP
C. OAA
D. Citric acid

Answer

To answer the question about where most of the energy removed from glucose molecules is transferred to at the end of the Krebs cycle, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Krebs Cycle**:
The Krebs cycle, also known as the citric acid cycle or TCA cycle, is a series of chemical reactions used by all aerobic organisms to generate energy. It occurs in the mitochondria of cells.

2. **Energy Extraction from Glucose**:
During the Krebs cycle, glucose is broken down through a series of reactions. The energy released during these reactions is captured in the form of high-energy electron carriers.

3. **Production of Electron Carriers**:
The main products of the Krebs cycle include NADH and FADH2. These are the high-energy electron carriers that store energy.

4. **Transfer of Energy**:
At the end of the Krebs cycle, most of the energy that was originally in the glucose molecule is now stored in these electron carriers (NADH and FADH2).

5. **Final Outcome**:
The NADH and FADH2 produced will then enter the electron transport chain, where they will be used to generate ATP, the energy currency of the cell.

### Final Answer:
At the end of the Krebs cycle, most of the energy removed from glucose molecules is transferred to NADH and FADH2.

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