Campbell Biology
Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 10.4, Problem 1CC
Summary Introduction

To identify: The number of CO2, ATP, and NADPH molecules required in the Calvin cycle to synthesize one glucose molecule.

Introduction:

Carbon dioxide diffuses into the chloroplast stroma, where sugar is created via the Calvin cycle, from the inside of a leaf through pores called stomata. Since light does not play a direct role in these processes, they are also known as light-independent reactions.

Carbon dioxide is converted into three-carbon sugars through the Calvin cycle, which involves the fixing (or incorporation) of carbon into organic molecules. The ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) produced in photosynthesis power and sustain this procedure. In contrast to the light reactions, which occur in the thylakoid membrane, the reactions of the Calvin cycle occur in the stroma.

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To synthesize one glucose molecule, the Calvin cycle uses__________ molecules of CO2, __________ molecules of ATP,and __________ molecules of NADPH.
In order to produce one molecule of glucose, the Calvin cycle uses _____ molecules of ATP and ______molecules of NADPH.
The original electron donor during the process of photosynthesis is _____________. (i.e. where do the electrons originally come from?)     H2O     Pyruvate     O2     NADP+
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