Exam 10: Photosynthesis

A gardener is concerned that her greenhouse is getting too hot from too much light, and seeks to shade her plants with colored translucent plastic sheets. What color should she use to reduce overall light energy, but still maximize plant growth?

In the process of carbon fixation, RuBP attaches a CO₂ to produce a six-carbon molecule, which is then split to produce two molecules of 3-phosphoglycerate. After phosphorylation and reduction produces glyceraldehyde 3-phosphate (G3P), what more needs to happen to complete the Calvin cycle?

Which statement describes the functioning of photosystem II?

Figure 10.1 -Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?

In C₃ photosynthesis, the reactions that require ATP take place in

In mechanism, photophosphorylation is most similar to

Compared to C₃ plants, C₄ plants

In an experiment studying photosynthesis performed during the day, you provide a plant with radioactive carbon (¹⁴C)dioxide as a metabolic tracer. The ¹⁴C is incorporated first into oxaloacetate. The plant is best characterized as a

Which of the following statements is a correct distinction between autotrophs and heterotrophs?

The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during

Why are C₄ plants able to photosynthesize with no apparent photorespiration?

The reactions that produce molecular oxygen (O₂)take place in

Plants photosynthesize only in the light. Plants respire

If the power fails and the lights go dark, what will happen to CO₂ levels?

In a plant leaf, the reactions that produce NADH occur in

Where does the Calvin cycle take place?

In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from

In thylakoids, protons travel through ATP synthase from the thylakoid space to the stroma. Therefore, the catalytic "knobs" of ATP synthase would be located

In photosynthetic cells, synthesis of ATP by the chemiosmotic mechanism occurs during

Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?