Multiple Choice
Which of the three domains of life is most suited to life in extreme environments?
1. A Review of General Chemistry
Intro to Organic Chemistry
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Which atmospheric molecule is required for the Calvin cycle in photosynthesis?
A
Nitrogen (N2)
B
Carbon dioxide (CO2)
C
Oxygen (O2)
D
Methane (CH4)
Verified step by step guidance1
Understand the Calvin cycle: The Calvin cycle is a series of biochemical reactions that occur in the stroma of chloroplasts in photosynthetic organisms. It is a part of the photosynthesis process where carbon fixation takes place.
Identify the role of carbon dioxide: In the Calvin cycle, carbon dioxide (
) is the molecule that is fixed into organic molecules. This process is essential for the synthesis of glucose and other carbohydrates.
Consider the options: Evaluate the given options - Nitrogen (
), Oxygen (
), Methane (
), and Carbon dioxide (
).
Determine the correct molecule: Recognize that Carbon dioxide (
) is the molecule required for the Calvin cycle as it is the source of carbon for the synthesis of glucose.
Conclude the reasoning: Conclude that Carbon dioxide (
) is the correct answer because it is the atmospheric molecule that participates directly in the Calvin cycle during photosynthesis.
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