Exercise
Carbon Dioxide Exchange & Fixation
Examine how plants absorb carbon dioxide and convert it into organic compounds. Understand the process of carbon fixation during photosynthesis.
Questions
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MultiChoice
By what physical process does carbon dioxide enter leaf spongy mesophyll cells?
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MultiChoice
In which stage of photosynthesis is carbon dioxide gas chemically fixed into sugar?
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MultiChoice
What term describes incorporating inorganic CO2 into organic carbon compounds?
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MultiChoice
Where in the chloroplast do carbon fixation enzymes operate?
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MultiChoice
Which abundant enzyme catalyzes the initial carbon dioxide fixation step?
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MultiChoice
What is the approximate concentration of carbon dioxide gas in Earth ambient air?
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MultiChoice
How does a decrease in atmospheric CO2 level affect photosynthetic rate?
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MultiChoice
Which chemical indicator changes color from red to yellow when CO2 level increases?
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MultiChoice
What color change occurs in hydrogencarbonate indicator when a plant photosynthesizes rapidly in light?
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MultiChoice
Why are air spaces in spongy mesophyll beneficial for gas exchange?
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MultiChoice
Which chemical compound is used in experiments to absorb carbon dioxide from air?
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MultiChoice
What 3-carbon sugar molecule is directly produced at the end of the Calvin cycle?