Level 1:

Mark all the products of the light reactions

Question

Level 1:

Mark all the products of the light reactions

BlackTom AI · Accepted Answer

The question asks to identify all products of the light-dependent reactions of photosynthesis from the given list.
Option: ADP + Pi. This is a reactant used by the chloroplast ATP synthase to make ATP, not a product of the light reactions. So this is incorrect as a product.
Option: ATP. During photosynthetic electron transport, the proton gradient drives ATP synthase to phosphorylate ADP to ATP. Therefore, ATP is a product of the light reactions, making this choice correct.
Option: NADP+. NADP+ is the oxidized form that accepts electrons and becomes NADPH in the light reactions. Since NADPH is the product, NADP+ itself is not a product of the light reactions. This is a precursor, not the product, so incorrect as a product in this context.
Option: NADPH. NADPH is formed when NADP+ accepts electrons and protons at the end of the electron transport chain. This is a direct product of the light reactions, so this choice is correct.
Option: Glucose. Glucose is produced later in the Calvin cycle (the light-independent reactions), not directly in the light reactions. Therefore, glucose is not a product of the light reactions and is incorrect here.
Option: CO2. Carbon dioxide is fixed during the Calvin cycle, not produced by the light reactions. So CO2 is not a product of the light reactions and is incorrect.
In summary, the valid products from the light-dependent reactions among the options are ATP and NADPH, while ADP + Pi, NADP+, Glucose, and CO2 are not produced in those reactions.

SC5015AS Unit 5 AdvSt Bio Quiz (Formative) - Photosynthesis

Level 1: Mark all the products of the light reactions

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