Concept explainers
Interpretation:
The advantages that are delivered by plants that have dual pathways for photophosphorylation are to be explained.
Concept Introduction:
ATP stands for Adenosine Triphosphate.
ATP is the primary energy carrier in the living organisms.
The energy of the
An electron transport chain is the series of electrons transferred from an electron donor to an electron acceptor. It is referred to as a
It is the last component of aerobic respiration and is the only reaction that utilizes atmospheric oxygen. It takes place in the inner mitochondrial space.
Oxidative phosphorylation is the
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Chapter 22 Solutions
Biochemistry
- REFLECT AND APPLY If photosynthesizing plants are grown in the presence of 14CO2, is every carbon atom of the glucose that is produced labeled with the radioactive carbon? Why or why not?arrow_forwardREFLECT AND APPLY Show how the reactions of the electron transport chain differ from those in Question 3 when FADH2 is the starting point for electron transport. Show how the reactions that liberate enough energy to drive the phosphorylation of ADP differ from the pathway when NADH is the starting point.arrow_forwardREFLECT AND APPLY Why is it useful to plot rate data for enzymatic reactions as a straight line rather than as a curve?arrow_forward
- REFLECT AND APPLY Does the net gain of ATP in glycolysis differ when glycogen, rather than glucose, is the starting material? If so, what is the change?arrow_forwardREFLECT AND APPLY What is the advantage of having a Q cycle in electron transport in spite of its complexity?arrow_forwardREFLECT AND APPLY Explain how the pentose phosphate path- way can respond to a cells need for ATP, NADPH, and ribose-5- phosphate.arrow_forward
- REFLECT AND APPLY What is the role of citrate in the transport of acetyl groups from the mitochondrion to the cytosol?arrow_forwardREFLECT AND APPLY Why is it important that energy released by exergonic reactions can be used to provide energy for endergonic reactions?arrow_forwardREFLECT AND APPLY What is the approximate P/O ratio that can be expected if intact mitochondria are incubated in the presence of oxygen, along with added succinate?arrow_forward
- REFLECT AND APPLY Why do the electron-transfer reactions of the cytochromes differ in standard reduction potential, even though all the reactions involve the same oxidationreduction reaction of iron?arrow_forwardREFLECT AND APPLY The malate-aspartate shuttle yields about 2.5 moles of ATP for each mole of cytosolic NADH. Why does nature use the glycerol-phosphate shuttle, which yields only about 1.5 moles of ATP?arrow_forwardREFLECT AND APPLY How would it affect the reactions of the pentose phosphate pathway to have an epimerase and not an isomerase to catalyze the reshuffling reactions?arrow_forward
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning