Question 1

List four consequences of global warming.

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Question 2

List three criteria for sustainable biofuel production.

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Question 3

List the types of metal that are components of the photosynthesis mechanisms. What functions do they serve?

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Question 4

Where does carbon dioxide fixation take place in the cell?

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Question 5

Why does carbon dioxide repress photorespiration?

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Question 6

What are triose phosphates? Where are they formed in plant carbohydrate metabolism?

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Question 7

If the rate of photosynthesis is plotted versus the incident wavelength of light, an action spectrum is obtained. How can the action spectrum provide information about the nature of the light-absorbing pigments involved in photosynthesis?

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Question 8

What is the net reaction for photosynthesis? What is the origin of the oxygen molecules in glucose?

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Question 9

Deforestation greatly decreases the plant biomass in any area. What impact will deforestation have on the quality of life in the region?

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Question 10

Explain the following observation. When a photosynthetic system is exposed to a brief flash of light no oxygen is evolved. It is only after several bursts of light that oxygen is evolved.

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Question 11

If a C3 plant and a C4 plant are placed in separate sealed containers and provided with adequate light and water, both will survive. If both plants are placed in a single sealed container the C3 plant will die. Explain.

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Question 12

Herbicides that act by promoting photorespiration are lethal to C3 plants but do not affect C4 plants. Explain.

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Question 13

What is the end product of photosynthesis when hydrogen sulfide is the source of hydrogen atoms?

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Question 14

What effect would you expect dinitrophenol to have on photosynthesis?

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Question 15

The burning of fossil fuels releases carbon dioxide into the atmosphere and is detrimental to Earth's ecosystems. Explain why the use of biofuels, which also release carbon dioxide into the atmosphere, is an improvement over fossil fuels.

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Question 16

In the absence of carbon dioxide, chlorophyll fluoresces. How does carbon dioxide prevent this fluorescence?

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Quiz 13: Photosynthesis