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Multiple Choice
Which of the following is NOT a direct fate of the energy flowing through photosynthesis?
A
Used to synthesize glucose during the Calvin cycle
B
Released as heat during photophosphorylation
C
Used for DNA replication in the nucleus
D
Stored as ATP and NADPH in the light reactions
Verified step by step guidance
1
Step 1: Begin by understanding the process of photosynthesis. Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose. It consists of two main stages: the light reactions and the Calvin cycle.
Step 2: Analyze the role of energy in the light reactions. During the light reactions, light energy is captured by chlorophyll and used to produce ATP and NADPH. These molecules store energy and are used in the Calvin cycle to synthesize glucose.
Step 3: Examine the Calvin cycle. The Calvin cycle uses ATP and NADPH generated in the light reactions to convert carbon dioxide into glucose. This is a direct fate of the energy flowing through photosynthesis.
Step 4: Consider the release of heat during photophosphorylation. Some energy is inevitably lost as heat during the process of photophosphorylation, which occurs in the light reactions. This is another direct fate of the energy flowing through photosynthesis.
Step 5: Evaluate the statement 'Used for DNA replication in the nucleus.' DNA replication is a cellular process that occurs in the nucleus and is not directly related to photosynthesis. The energy flowing through photosynthesis is not directly used for DNA replication, making this the correct answer to the question.