### Understanding the Electron Transport Chain

The electron transport chain (ETC) is a series of protein complexes located in the inner mitochondrial membrane. It plays a crucial role in cellular respiration by transferring electrons through a series of redox reactions, which ultimately leads to ATP production.

### Role of NADH and NAD⁺

1. **NADH**: This molecule is the reduced form of nicotinamide adenine dinucleotide. NADH donates its electrons to the electron transport chain. When NAD⁺ is reduced to NADH, it carries high-energy electrons which can be transferred to the ETC.

2. **NAD⁺**: On the other hand, NAD⁺ is the oxidized form of the molecule and does not donate electrons; it acts as an electron acceptor during metabolic processes like glycolysis and the Krebs cycle, turning into NADH.

### Conclusion

- **Final Answer**: NADH donates electrons to the electron transport chain.

Question

### Understanding the Electron Transport Chain

The electron transport chain (ETC) is a series of protein complexes located in the inner mitochondrial membrane. It plays a crucial role in cellular respiration by transferring electrons through a series of redox reactions, which ultimately leads to ATP production.

### Role of NADH and NAD⁺

1. **NADH**: This molecule is the reduced form of nicotinamide adenine dinucleotide. NADH donates its electrons to the electron transport chain. When NAD⁺ is reduced to NADH, it carries high-energy electrons which can be transferred to the ETC.

2. **NAD⁺**: On the other hand, NAD⁺ is the oxidized form of the molecule and does not donate electrons; it acts as an electron acceptor during metabolic processes like glycolysis and the Krebs cycle, turning into NADH.

### Conclusion

- **Final Answer**: NADH donates electrons to the electron transport chain.

Knowee AI · Accepted Answer

### Understanding the Electron Transport Chain

The electron transport chain (ETC) is a series of protein complexes located in the inner mitochondrial membrane. It plays a crucial role in cellular respiration by transferring electrons through a series of redox reactions, which ultimately leads to ATP production.

### Role of NADH and NAD⁺

1. **NADH**: This molecule is the reduced form of nicotinamide adenine dinucleotide. NADH donates its electrons to the electron transport chain. When NAD⁺ is reduced to NADH, it carries high-energy electrons which can be transferred to the ETC.

2. **NAD⁺**: On the other hand, NAD⁺ is the oxidized form of the molecule and does not donate electrons; it acts as an electron acceptor during metabolic processes like glycolysis and the Krebs cycle, turning into NADH.

### Conclusion

- **Final Answer**: NADH donates electrons to the electron transport chain.

Which will donate electrons to the electron transport chain, NAD⁺ or NADH?Group of answer choicesNAD⁺NADHNext

Question

Solution

Understanding the Electron Transport Chain

Role of NADH and NAD⁺

Conclusion

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