A botanist brings you a plant that she has collected during her travels and asks you to determine the photosynthetic pathway the plant uses. You grow the plant in a special chamber on a 14:10-hour light/dark cycle and track the fate of radiolabeled CO2 in the plant over 24 hours. You begin monitoring the plant's photosynthetic activity at the beginning of the light portion of the cycle. You find that during the day, the plant's stomata remain closed, and an enzyme with a low affinity for CO2 slowly catalyzes the joining of CO2 and a five-carbon molecule in the plant's mesophyll cells. Once the chamber switches to the night cycle, the plant stomata open, and an enzyme with a high affinity for CO2 slowly catalyzes the joining of CO2 to a three-carbon molecule to produce a four-carbon molecule in the mesophyll cells. What photosynthetic pathway(s) does this plant use? Group of answer choices C4 Photorespiration CAM C3

A botanist brings you a plant that she has collected during her travels and asks you to determine the photosynthetic pathway the plant uses. You grow the plant in a special chamber on a 14:10-hour light/dark cycle and track the fate of radiolabeled CO2 in the plant over 24 hours. You begin monitoring the plant's photosynthetic activity at the beginning of the light portion of the cycle. You find that during the day, the plant's stomata remain closed, and an enzyme with a low affinity for CO2 slowly catalyzes the joining of CO2 and a five-carbon molecule in the plant's mesophyll cells. Once the chamber switches to the night cycle, the plant stomata open, and an enzyme with a high affinity for CO2 slowly catalyzes the joining of CO2 to a three-carbon molecule to produce a four-carbon molecule in the mesophyll cells. What photosynthetic pathway(s) does this plant use? Group of answer choices C4 Photorespiration CAM C3

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter20: The Protists

Section: Chapter Questions

Problem 4CT: Melvin Calvin and Andrew Benson determined the steps in the light-independent reactions of...

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