Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 10.4, Problem 2R
Summary Introduction
To review:
The CAM (crassulacean acid
Introduction:
Some plants of family Crassulaceae, such as pineapple, cactus, and some flowering plants, have water-storing capacities and are mostly found in deserts. These plants fix carbon by a special metabolism known as crassulacean acid metabolism or CAM. This saves the plants from dehydration. These plants have separated CO2 fixation and Calvin cycle by time.
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Explain the chemical pathway used to fix carbon dioxide in C3 plants in preparation for the Calvin cycle. Explain the chemical pathway used to fix carbon dioxide in C4 plants in preparation for the Calvin cycle. Explain the leaf anatomy in C3 plants and how the structure fits the function of carbon fixation. Explain the leaf anatomy in C4 plants and how the structure fits the function of carbon fixation.
Describe the three major steps in the Calvin cycle and the role of the key enzyme rubisco.
Explain, using a simple diagram, the relationship between acyclic photophosphorylation (photophase) and the Calvin cycle (dark phase).
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Life: The Science of Biology
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