The molecule that plays the same role that oxygen plays in the mitochondrial electron transport chain during the light reactions of photosynthesis is water.

Here's the step-by-step explanation:

1. In the light reactions of photosynthesis, light energy is used to split water molecules, releasing oxygen, protons (H+ ions), and electrons.

2. These electrons are then used to reduce NADP+ to NADPH, which is used in the Calvin cycle to fix carbon dioxide into glucose.

3. Similarly, in the mitochondrial electron transport chain, oxygen acts as the final electron acceptor, combining with electrons and protons to form water.

4. Therefore, water in photosynthesis plays a similar role to oxygen in the electron transport chain, as it is the source of the electrons that are ultimately transferred to NADP+ (in photosynthesis) or combined with oxygen (in the electron transport chain).

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The molecule that plays the same role that oxygen plays in the mitochondrial electron transport chain during the light reactions of photosynthesis is water.

Here's the step-by-step explanation:

1. In the light reactions of photosynthesis, light energy is used to split water molecules, releasing oxygen, protons (H+ ions), and electrons.

2. These electrons are then used to reduce NADP+ to NADPH, which is used in the Calvin cycle to fix carbon dioxide into glucose.

3. Similarly, in the mitochondrial electron transport chain, oxygen acts as the final electron acceptor, combining with electrons and protons to form water.

4. Therefore, water in photosynthesis plays a similar role to oxygen in the electron transport chain, as it is the source of the electrons that are ultimately transferred to NADP+ (in photosynthesis) or combined with oxygen (in the electron transport chain).

Knowee AI · Accepted Answer

The molecule that plays the same role that oxygen plays in the mitochondrial electron transport chain during the light reactions of photosynthesis is water.

Here's the step-by-step explanation:

1. In the light reactions of photosynthesis, light energy is used to split water molecules, releasing oxygen, protons (H+ ions), and electrons.

2. These electrons are then used to reduce NADP+ to NADPH, which is used in the Calvin cycle to fix carbon dioxide into glucose.

3. Similarly, in the mitochondrial electron transport chain, oxygen acts as the final electron acceptor, combining with electrons and protons to form water.

4. Therefore, water in photosynthesis plays a similar role to oxygen in the electron transport chain, as it is the source of the electrons that are ultimately transferred to NADP+ (in photosynthesis) or combined with oxygen (in the electron transport chain).

What molecule in the light reactions of photosynthesis plays the same role that oxygen plays in the mitochondrial electron transport chain?Group of answer choiceschlorophyllwaterCO2NADP+ATP

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