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 coloured translucent plastic sheets. What colour should she use to reduce overall light energy, but still maximize plant growth?

Reduction of oxygen to form water occurs during

Use the following information to answer the questions below. Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light. -If you ran the same experiment without passing light through a prism, what would you predict?

Reactions that require CO₂ take place in

Use the following information to answer the questions below. Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light. -What did Engelmann conclude about the congregation of bacteria in the red and blue areas?

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 sequences correctly represents the flow of electrons during photosynthesis?

Which process is most directly driven by light energy?

You have isolated pigments from an unknown plant and are studying their spectral absorption. You irradiate them with a specific wavelength, yet you see no fluorescence. What is the likely explanation?

Plants photosynthesize only in the light. Plants respire

If plant gene alterations cause the plants to be deficient in photorespiration, what would most probably occur?

If atmospheric CO₂ concentrations increase twofold or more, how will plants be affected, disregarding any changes in climate?

Use the following figure to answer the questions below. -Which of the following statements is true concerning the figure above?

Use the following figure and the compounds labelled A, B, C, D, and E to answer the following questions. -Which molecule(s)of the Calvin cycle is (are)also found in glycolysis?

Some photosynthetic bacteria (e.g., purple sulphur bacteria)have only photosystem I, whereas others (e.g., cyanobacteria)have both photosystem I and photosystem II. Which of the following might this observation imply?

Reduction of NADP⁺ occurs during

Use the following figure to answer the questions below. -The figure above shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?

The phylogenetic distribution of the enzyme Rubisco is limited to

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

Which of the following does not occur during the Calvin cycle?