Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 13, Problem 7Q
Summary Introduction
To review:
The regulation of aerobic respiration and the way in which photosynthesis suppresses mitochondria respiration in plants.
Introduction:
Cytoplasmic ATP (adenosine triphosphate):ADP and NADH:NAD+ ratios rise on illumination. Transportation of DHAP (dihydrogen ammonium phosphate) from the stroma to cytoplasm leads to conversion of DHAP into glyceraldehyde-3-phosphate, and further into glycerate-1,3-bisphosphate. The reverse of this reaction occurs in cytoplasm and chloroplast. This shuttle in reaction results in a decrease in the activity of mitochondrial respiration.
Aerobic respiration is a process in which plants use environmental oxygen and carbohydrate to produce energy. This is an antiphotosynthesis pathway and takes placeusually when photosynthesis does not occur. Aerobic respiration is a combination of mainly threepathways: glycolysis, Krebs cycle, and electron transport chain (ETC). Also, lipid and protein synthesis play a role in this.
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Chapter 13 Solutions
Biochemistry: The Molecular Basis of Life
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