Exam 11: Photosynthetic Processes

Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. Which of the following statements best describes a related function they serve in plants?

Which of the following events are associated with chemiosmosis in chloroplasts?

In which cell of the accompanying figure would elevated oxygen concentrations have the greatest inhibitory effect on carbon fixation reactions?

In chloroplasts, the photosynthetic electron transport chain acidifies which of the following cellular compartments?

Which of the following statements best describes the accompanying figure?

Which of the following statements correctly describes a distinction between autotrophs and heterotrophs?

In which cellular structure are the enzymes of the Calvin cycle localized?

Which process is most directly driven by light energy?

Which of the following observations would be the best indicator that an organism lacks photosystem II?

Lab students placed ten spinach leaf disks in each of three test tubes containing a baking soda solution and a control tube without baking soda. The volume of liquid in each tube and the temperature of the solutions were held constant. All tubes were placed an equal distance from a light source as indicated in the accompanying table. After 10 minutes, the amount of oxygen present in each sample was measured. Which tube is expected to contain the greatest quantity of oxygen?

A flask containing photosynthetic green algae and a control flask containing only water are exposed to a cycle of 12 hours of light and 12 hours of darkness. Which of the following statements best describes how the relative dissolved oxygen concentration in the flask with algae will compare to the control flask?

Which of the following statements best describes the relationship between autotrophs and heterotrophs?

Which of the following statements best explains the ability of CAM plants to synthesize sugars in the daytime while keeping their stomata closed to reduce water loss?

How is photosynthesis similar in C4 plants and CAM plants?

The accompanying figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Which of the following statements best explains the low rate of photosynthesis at 550 nm?

Which of the following statements best describes the conditions under which the Calvin cycle and cellular respiration occur in plants?

Which of the following molecules will accumulate if light reactions occur normally, but the Calvin Cycle is inhibited?

Which of the following molecules best describes the primary form in which plants stockpile extra sugar produced by photosynthesis?

Which of the following processes is directly associated with photosystem I?

Which of the following processes occurs in the Calvin cycle?