Q1. Oxaloacetate uniformly labelled with 14C (such as with equal amounts of 14C in each of its carbon atoms) is condensed with unlabeled acetyl-CoA. After a single pass through the citric acid cycle back to oxaloacetate, what fraction of the unique radioactivity will be found in the oxaloacetate?

Q2. Based on what you already know about photosynthesis, develop the testable hypothesis to elucidate the influence of an increase in light intensity on the photosynthetic rate in tomato leaves.