Multiple Choice
Why are 6 molecules of CO$_2$ required during the Calvin cycle to produce one molecule of glucose?
8
views
9. Photosynthesis
Calvin Cycle
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following molecules are required as inputs for the Calvin cycle during photosynthesis?
A
CO$_2$, ATP, and NADPH
B
Glucose, NADH, and CO$_2$
C
Pyruvate, NADPH, and O$_2$
D
O$_2$, ATP, and FADH$_2$
Verified step by step guidance1
Step 1: Begin by understanding the Calvin cycle, which is the light-independent reaction of photosynthesis. It occurs in the stroma of chloroplasts and is responsible for synthesizing glucose from carbon dioxide (CO$_2$).
Step 2: Identify the key inputs required for the Calvin cycle. These include CO$_2$, ATP, and NADPH. CO$_2$ provides the carbon atoms for glucose synthesis, ATP supplies energy, and NADPH provides reducing power (electrons).
Step 3: Analyze the options provided in the question. Compare each set of molecules to the known inputs of the Calvin cycle: CO$_2$, ATP, and NADPH.
Step 4: Eliminate incorrect options by checking if they include molecules not involved in the Calvin cycle. For example, glucose is a product, not an input; NADH and FADH$_2$ are used in cellular respiration, not photosynthesis; pyruvate is part of glycolysis, and O$_2$ is involved in the electron transport chain, not the Calvin cycle.
Step 5: Select the correct answer, which is the option containing CO$_2$, ATP, and NADPH, as these are the required inputs for the Calvin cycle during photosynthesis.
Related Videos
Related Practice
