Concept explainers
Interpretation:
The role played by the respiratory complex in the citric acid cycle is to be explained.
Concept introduction:
Cytochromes are the type of proteins that consist of iron as the heme group.
Oxidation is the addition of an electronegative element or the removal of an electropositive element in a
Reduction is the addition of an electropositive element or the removal of an electronegative element in a chemical reaction.
The
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Chapter 20 Solutions
Biochemistry
- RECALL Do all enzymes display kinetics that obey the Michaelis-Menten equation? Which ones do not?arrow_forwardREFLECT AND APPLY Argue logically that the urea cycle should not have evolved. Then, logically counter your argument.arrow_forwardREFLECT AND APPLY How could the expression milking it for all its worth relate to the citric acid cycle?arrow_forward
- REFLECT AND APPLY Why is it useful to plot rate data for enzymatic reactions as a straight line rather than as a curve?arrow_forwardRECALL Suggest a way in which the difference between the functions of hemoglobin and myoglobin is reflected in the shapes of their respective oxygen-binding curves.arrow_forwardREFLECT AND APPLY List two classes of compounds derived from arachidonic acid. Suggest some reasons for the amount of biomedical research devoted to these compounds.arrow_forward
- REFLECT AND APPLY Explain how glycogen phosphorylase is controlled allosterically and by covalent modification.arrow_forwardRECALL Define substrate-level phosphorylation and give an example from the reactions discussed in this chapter.arrow_forwardRECALL Outline the role of carnitine in the transport of acyl-CoA molecules into the mitochondrion. How many enzymes are involved? What are they called?arrow_forward
- REFLECT AND APPLY In Section 2-4, we said that at the equivalence point of a titration of acetic acid, essentially all the acid has been converted to acetate ion. Why do we not say that all the acetic acid has been converted to acetate ion?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_forwardREFLECT AND APPLY Why is acetyl-CoA considered the central molecule of metabolism?arrow_forward
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning