Multiple Choice
Which of the following statements accurately describes when the Calvin cycle is occurring in plants?
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Intro to Organic Chemistry
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Why is water necessary for the process of photosynthesis in plants?
A
Water is used to transport chlorophyll within the plant.
B
Water acts as a solvent for glucose production.
C
Water provides the oxygen released during photosynthesis.
D
Water is the primary source of carbon dioxide for photosynthesis.
Verified step by step guidance1
Understand the role of water in photosynthesis: Water is crucial in the photosynthesis process as it participates in the light-dependent reactions.
Explore the light-dependent reactions: In these reactions, water molecules are split into oxygen, protons, and electrons through a process called photolysis. This occurs in the thylakoid membranes of chloroplasts.
Recognize the importance of oxygen: The splitting of water molecules releases oxygen as a byproduct, which is then expelled from the plant into the atmosphere.
Identify the role of electrons and protons: The electrons released from water are used to replace those lost by chlorophyll in the photosystem II, while protons contribute to the formation of ATP and NADPH, essential for the Calvin cycle.
Clarify misconceptions: Water is not used to transport chlorophyll, act as a solvent for glucose, or provide carbon dioxide. Its primary role is to supply electrons and protons and release oxygen during photosynthesis.
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