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Multiple Choice
Which of the following is a product of the light-independent reactions in photosynthesis?
A
ATP
B
Oxygen
C
Glucose
D
NADPH
Verified step by step guidance
1
Understand the context: Photosynthesis consists of two main stages - light-dependent reactions and light-independent reactions (Calvin Cycle). The light-dependent reactions occur in the thylakoid membranes and produce ATP, NADPH, and oxygen as by-products.
Identify the light-independent reactions: These reactions, also known as the Calvin Cycle, occur in the stroma of the chloroplasts and do not require light directly. They use ATP and NADPH produced in the light-dependent reactions to convert carbon dioxide into glucose.
Recognize the main product: The primary purpose of the Calvin Cycle is to synthesize glucose from carbon dioxide and water, using the energy from ATP and the reducing power of NADPH.
Differentiate between products: ATP and NADPH are consumed during the Calvin Cycle, while oxygen is a by-product of the light-dependent reactions. Glucose is the main product of the light-independent reactions.
Conclude the understanding: The light-independent reactions result in the formation of glucose, which serves as an energy source for the plant and can be stored as starch or used in cellular respiration.