The reactions of photosynthesis are an important part of the energy conversion pathways in plants. Suppose you are conducting research on photosynthesis with the following conditions in the plants you are studying: high concentrations of NADPH in the chloroplasts Low concentrations of ATP in the chloroplasts Low intracellular concentrations of glyceraldehyde-3-phosphate (G3P) The plant growing in full sunlight Which of the following statements is TRUE? A)Carbohydrate production is elevated. B)Levels of antioxidants in the cells are elevated. C)Cellular metabolic processes slow due to decreased ATP levels in the chloroplasts. D)The rate of CO₂ fixation by rubisco is elevated.

Question

Quizplus · Accepted Answer

High concentrations of NADPH and exposure to full sunlight can lead to the production of reactive oxygen species (ROS), which can damage cellular components. Plants increase levels of antioxidants to mitigate this damage, making statement B true.

The Reactions of Photosynthesis Are an Important Part of the Energy