Which of the following questions would BEST determine whether a plant is undergoing the Calvin cycle? A. Is glucose being produced? B. Is ATP being produced? C. Is oxygen being produced? D. Is NADPH being produced?

## Step 1<br />The Calvin cycle, also known as the Calvin-Benson cycle, is a part of photosynthesis that occurs in the stroma of the chloroplasts. This cycle does not produce oxygen directly, but it does produce glucose.<br /><br />## Step 2<br />The Calvin cycle uses ATP and NADPH, which are produced during the light-dependent reactions of photosynthesis, to convert carbon dioxide into glucose.<br /><br />## Step 3<br />While ATP is used in the Calvin cycle, it is not produced by the Calvin cycle. Instead, ATP is produced during the light-dependent reactions of photosynthesis.<br /><br />## Step 4<br />Oxygen is not produced in the Calvin cycle. Oxygen is produced during the light-dependent reactions of photosynthesis.<br /><br />## Step 5<br />Glucose is the primary product of the Calvin cycle. Therefore, the best way to determine whether a plant is undergoing the Calvin cycle would be to check if glucose is being produced.