Biology
Grade-10
Easy
Question
Which is the ultimate electron acceptor of respiration in an aerobic organism?
- Cytochrome
- Oxygen
- Hydrogen
- Glucose
Hint:
- The process by which an organism delivers oxygen to the cells or tissues needed for metabolism is known as respiration. It can be physical or chemical.
- The series of metabolic processes called "cellular respiration" are used by cells to convert chemical energy from oxygen molecules.
- A catabolic process called respiration reduces larger molecules to smaller ones and generates energy.
The correct answer is: Oxygen
Oxygen is the ultimate electron acceptor of respiration in an aerobic organism.
- As the final acceptor of respiration in aerobic organisms is oxygen, the electron transport chain catalyses the transfer of electrons from NADH to oxygen.
- Since molecular oxygen has a significant oxidizing effect, it is a superior electron acceptor.
- This produces water in the mitochondrial matrix.
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