Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 1, Problem 49RE
REFLECT AND APPLY The process of protein folding is spontaneous in the
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Chapter 1 Solutions
Biochemistry
Ch. 1 - RECALL State why the following terms are important...Ch. 1 - RECALL Match each entry in Column a with one in...Ch. 1 - RECALL Identify the functional groups in the...Ch. 1 - REFLECT AND APPLY In 1828, Wohler was the first...Ch. 1 - REFLECT AND APPLY A friend who is enthusiastic...Ch. 1 - REFLECT AND APPLY Does biochemistry differ from...Ch. 1 - REFLECT AND APPLY An earlier mission to Mars...Ch. 1 - REFLECT AND APPLY Common proteins are polymers of...Ch. 1 - REFLECT AND APPLY Nucleic acids are polymers of...Ch. 1 - REFLECT AND APPLY RNA is often characterized as...
Ch. 1 - REFLECT AND APPLY Why is the development of...Ch. 1 - REFLECT AND APPLY What are two major advantages of...Ch. 1 - REFLECT AND APPLY Why was the development of a...Ch. 1 - REFLECT AND APPLY Comment on RNAs role in...Ch. 1 - REFLECT AND APPLY Do you consider it a reasonable...Ch. 1 - RECALL List five differences between prokaryotes...Ch. 1 - RECALL Do the sites of protein synthesis differ in...Ch. 1 - REFLECT AND APPLY Assume that a scientist claims...Ch. 1 - RECALL Draw an idealized animal cell, and identify...Ch. 1 - RECALL Draw an idealized plant cell, and identify...Ch. 1 - RECALL What are the differences between the...Ch. 1 - RECALL Which organelles are surrounded by a double...Ch. 1 - RECALL Which organelles contain DNA?Ch. 1 - RECALL Which organelles are the sites of...Ch. 1 - RECALL State how the following organelles differ...Ch. 1 - RECALL List the five kingdoms into which living...Ch. 1 - RECALL Which of the five kingdoms consist of...Ch. 1 - RECALL How does the five-kingdom classification...Ch. 1 - REFLECT AND APPLY What are the advantages of being...Ch. 1 - REFLECT AND APPLY Mitochondria and chloroplasts...Ch. 1 - REFLECT AND APPLY Fossil evidence indicates that...Ch. 1 - RECALL Which processes are favored: those that...Ch. 1 - RECALL Does the thermodynamic term spontaneous...Ch. 1 - BIOCHEMICAL CONNECTIONS For the process...Ch. 1 - RECALL Which of the following are spontaneous...Ch. 1 - REFLECT AND APPLY In which of the following...Ch. 1 - REFLECT AND APPLY Why is it necessary to specify...Ch. 1 - REFLECT AND APPLY Why is the entropy of a system...Ch. 1 - REFLECT AND APPLY A reaction at 23C has G=1kJmol1....Ch. 1 - REFLECT AND APPLY Urea dissolves very readily in...Ch. 1 - REFLECT AND APPLY Would you expect the reaction...Ch. 1 - REFLECT AND APPLY The existence of organelles in...Ch. 1 - REFLECT AND APPLY Why is it advantageous for a...Ch. 1 - REFLECT AND APPLY Which would you expect to have a...Ch. 1 - REFLECT AND APPLY How would you modify your answer...Ch. 1 - REFLECT AND APPLY Would it be more or less likely...Ch. 1 - REFLECT AND APPLY What thermodynamic...Ch. 1 - REFLECT AND APPLY If cells of the kind we know...Ch. 1 - REFLECT AND APPLY The process of protein folding...Ch. 1 - REFLECT AND APPLY In biochemistry, the exergonic...
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- REFLECT 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 Would you expect mRNA or rRNA to be degraded more quickly in the cell? Why?arrow_forwardREFLECT AND APPLY The enzyme D-amino acid oxidase has a very high turnover number because the D-amino acids are potentially toxic. The KM for the enzyme is in the range of 1 to 2 mM for the aromatic amino acids and in the range of 15 to 20 mM for such amino acids as serine, alanine, and the acidic amino acids. Which of these amino acids are the preferred substrates for the enzyme?arrow_forward
- REFLECT 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_forwardREFLECT AND APPLY Suggest a reason why the cell membranes of bacteria grown at 20C tend to have a higher proportion of unsaturated fatty acids than the membranes of bacteria of the same species grown at 37C. In other words, the bacteria grown at 37C have a higher proportion of saturated fatty acids in their cell membranes.arrow_forwardREFLECT AND APPLY The fidelity of protein synthesis is assured twice during protein synthesis. How and when?arrow_forward
- REFLECT AND APPLY A mutation that changes an alanine residue in a protein to an isoleucine leads to a loss of activity. Activity is regained when a further mutation at the same site changes the isoleucine to a glycine. Why?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 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_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 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_forwardREFLECT AND APPLY A sample of an unknown peptide was divided into two aliquots. One aliquot was treated with trypsin; the other was treated with cyanogen bromide. Given the following sequences (N-terminal to C-terminal) of the resulting fragments, deduce the sequence of the original peptide. Trypsin treatment AsnThrTrpMetIleLysGlyTyrMetGlnPheValLeuGlyMetSerArg Cyanogen bromide treatment GlnPheValLeuGlyMetIleLysGlyTyrMetSerArgAsnThrTrpMetarrow_forward
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