Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 23, Problem 22RE
Interpretation Introduction
Interpretation:
The essential amino acids for a phenylketonuric adult are to be listed. These amino acids are to be compared with the requirements for a normal adult.
Concept introduction:
Amino acids that cannot be synthesized by the body are essential ones.
Amino acids cannot be stored, except, proteins, and dietary sources of amino acids, which are essentially needed at regular intervals.
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Chapter 23 Solutions
Biochemistry
Ch. 23 - RECALL What kinds of organisms can fix nitrogen?...Ch. 23 - RECALL How is nitrogen fixed (converted from...Ch. 23 - Prob. 3RECh. 23 - Prob. 4RECh. 23 - Prob. 5RECh. 23 - Prob. 6RECh. 23 - Prob. 7RECh. 23 - REFLECT AND APPLY Metabolic cycles are rather...Ch. 23 - RECALL What is the relationship between...Ch. 23 - Prob. 10RE
Ch. 23 - Prob. 11RECh. 23 - Prob. 12RECh. 23 - Prob. 13RECh. 23 - Prob. 14RECh. 23 - Prob. 15RECh. 23 - Prob. 16RECh. 23 - Prob. 17RECh. 23 - Prob. 18RECh. 23 - REFLECT AND APPLY Sulfanilamide and related sulfa...Ch. 23 - Prob. 20RECh. 23 - Prob. 21RECh. 23 - Prob. 22RECh. 23 - Prob. 23RECh. 23 - Prob. 24RECh. 23 - RECALL Describe citrulline and ornithine based on...Ch. 23 - Prob. 26RECh. 23 - Prob. 27RECh. 23 - Prob. 28RECh. 23 - Prob. 29RECh. 23 - Prob. 30RECh. 23 - Prob. 31RECh. 23 - Prob. 32RECh. 23 - Prob. 33RECh. 23 - Prob. 34RECh. 23 - Prob. 35RECh. 23 - Prob. 36RECh. 23 - REFLECT AND APPLY Why is it better, when running a...Ch. 23 - REFLECT AND APPLY Argue logically that the urea...Ch. 23 - BIOCHEMICAL CONNECTIONS How is the importance of...Ch. 23 - Prob. 40RECh. 23 - RECALL What is the structural difference between...Ch. 23 - Prob. 42RECh. 23 - RECALL Does the conversion of IMP to GMP use or...Ch. 23 - RECALL Discuss the role of feedback inhibition in...Ch. 23 - RECALL How many high-energy phosphate bonds must...Ch. 23 - REFLECT AND APPLY Why do most mammals, other than...Ch. 23 - Prob. 47RECh. 23 - RECALL Compare the fates of the products of purine...Ch. 23 - Prob. 49RECh. 23 - Prob. 50RECh. 23 - REFLECT AND APPLY Chemotherapy patients receiving...
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- RECALL Are amino acids other than the usual 20 amino acids found in proteins? If so, how are such amino acids incorporated into proteins? Give an example of such an amino acid and a protein in which it occurs.arrow_forwardRECALL What are some diseases caused by misfolded proteins?arrow_forwardRECALL Is it possible to form cyclic peptides without bonds between side chains of the component amino acids?arrow_forward
- RECALL What is the structure of ATCase?arrow_forwardREFLECT AND APPLY Explain why a 50S ribosomal subunit and a 30S ribosomal subunit combine to form a 70S subunit, instead of an 80S subunit.arrow_forwardREFLECT AND APPLY You are in the process of determining the amino acid sequence of a protein and must reconcile contradictory results. In one trial, you determine a sequence with glycine as the N-terminal amino acid and asparagine as the C-terminal amino acid. In another trial, your results indicate phenylalanine as the N-terminal amino acid and alanine as the C-terminal amino acid. How do you reconcile this apparent contradiction?arrow_forward
- REFLECT AND APPLY The amino acid hydroxyproline is found in collagen. There is no codon for hydroxyproline. Explain the occurrence of this amino acid in a common protein.arrow_forwardREFLECT AND APPLY Suggest an explanation for the observation that when proteins are chemically modified so that specific side chains have a different chemical nature, these proteins cannot be denatured reversibly.arrow_forwardREFLECT AND APPLY E. coli incorporates deoxyribonucleotides into DNA at a rate of 250 to 1000 bases per second. Using the higher value, translate this into typing speed in words per minute. (Assume five characters per word, using the typing analogy from Question 36.)arrow_forward
- REFLECT AND APPLY Consider the structures of arabinose and ribose. Explain why nucleotide derivatives of arabinose, such as ara-C and ara-A, are effective metabolic poisons.arrow_forwardREFLECT AND APPLY You are in the process of determining the amino acid sequence of a peptide. After trypsin digestion followed by the Edman degradation, you see the following peptide fragments: LeuGlyArgGlySerPheTyrAsnHisSerGluAspMetCysLysThrTyrGluValCysMetHis What is abnormal concerning these results? What might have been the problem that caused it?arrow_forwardREFLECT AND APPLY Outline the methods you would use to pro- duce human growth hormone (a substance used in the treatment of dwarfism) in bacteria.arrow_forward
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