Concept explainers
Interpretation:
The three ways in which the structure of chlorophyll differs from the structure of heme are to be determined.
Concept introduction:
The basic molecular structure of chlorophyll contains a chlorine ring, which contains four nitrogen atoms surrounding the central magnesium atom. In addition to that, it contains several other side chains and a hydrocarbon tail.
The molecular structure of hemoglobin contains four heme groups surrounding a globin group in the tetrahedral fashion. The four iron atoms bind to the oxygen atom forming an oxyhemobglobin molecule.
The major difference between the structures of chlorophyll and heme group is the presence of a cyclopentanone ring fused to the tetrapyrrole ring.
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Chapter 22 Solutions
Biochemistry
- REFLECT AND APPLY Would you expect the production of sugars by plants in photosynthesis to be an exergonic or endergonic process? Give the reason for your answer.arrow_forwardREFLECT AND APPLY Draw a Haworth projection for the disaccharide gentibiose, given the following information: (a) It is a dimer of glucose. (b) The glycosidic linkage is (16). (c) The anomeric carbon not involved in the glycosidic linkage is in the configuration.arrow_forwardREFLECT 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_forward
- REFLECT AND APPLY How does the cyclization of sugars introduce a new chiral center?arrow_forwardREFLECT AND APPLY Albert Szent-Gyorgi, a pioneer in early photosynthesis research, stated, What drives life is a little electric current, kept up by the sunshine. What did he mean by this?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
- RECALL Define the term reducing sugar.arrow_forwardREFLECT AND APPLY Two sugars are epimers of each other. Is it possible to convert one to the other without breaking covalent bonds?arrow_forwardRECALL Define substrate-level phosphorylation and give an example from the reactions discussed in this chapter.arrow_forward
- REFLECT AND APPLLY Is the reaction of 2-phosphoglycerate to phosphoenolpyruvate a redox reaction? Give the reason for your answer.arrow_forwardREFLECT AND APPLY Why is it necessary or advantageous for the body to make zymogens?arrow_forwardREFLECT AND APPLY Starting with the open-chain form of D- ribose, write equations for the cyclization reactions that form the pyranose and the furanose forms.arrow_forward
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning