Multiple Choice
Which of the following statements best describes Lamarck's theory of evolution, and why is it considered incorrect in the context of modern organic chemistry?
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How is the process of carbon fixation in CAM plants different from the process in C3 and C4 plants?
A
CAM plants use a different enzyme for carbon fixation compared to C3 and C4 plants.
B
CAM plants fix carbon at night, storing it as malate, while C3 and C4 plants fix carbon during the day.
C
CAM plants fix carbon directly into glucose, unlike C3 and C4 plants.
D
CAM plants do not perform photosynthesis, unlike C3 and C4 plants.
Verified step by step guidance1
Understand the concept of carbon fixation: Carbon fixation is the process of converting inorganic carbon (CO2) into organic compounds within plants, which is a crucial part of photosynthesis.
Identify the differences in carbon fixation between CAM, C3, and C4 plants: CAM plants fix carbon at night, storing it as malate, while C3 and C4 plants fix carbon during the day.
Explore the role of enzymes in carbon fixation: CAM plants use a different enzyme for carbon fixation compared to C3 and C4 plants, which allows them to fix carbon at night.
Clarify the storage and conversion process in CAM plants: CAM plants store fixed carbon as malate during the night and convert it to glucose during the day, unlike C3 and C4 plants.
Recognize the unique adaptation of CAM plants: CAM plants have adapted to arid conditions by fixing carbon at night to minimize water loss, which is different from the daytime fixation in C3 and C4 plants.
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