Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 14RE
REFLECT AND APPLY Comment on RNA’s role in catalysis and coding in theories of the origin of life.
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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 Why was the development of a coding system important to the development of life?arrow_forwardREFLECT AND APPLY List three molecular changes that take place in the processing of eukaryotic mRNA.arrow_forwardREFLECT AND APPLY Comment on the evolutionary implications of the differences in the genetic code observed in mitochondria.arrow_forward
- REFLECT AND APPLY Outline a mechanism by which RNA can catalyze its own self-splicing.arrow_forwardREFLECT AND APPLY Describe the recognition process by which the tRNA for N-formylmethionine interacts with the portion of mRNA that specifies the start of transcription.arrow_forwardREFLECT AND APPLY Diagram a section of DNA being transcribed. Give the various names for the two strands of DNA.arrow_forward
- REFLECT AND APPLY RNA is often characterized as being the first biologically active molecule. What two properties or activities does RNA display that are important to the evolution of life? Hint: Neither proteins nor DNA have both of these properties.arrow_forwardREFLECT AND APPLY How would protein synthesis be affected if a single codon could specify the incorporation of more than one amino acid (an ambiguous code)?arrow_forwardREFLECT AND APPLY List three mechanisms that relax the twisting stress in helical DNA molecules.arrow_forward
- REFLECT AND APPLY Is the following statement true or false? Why? The flow of genetic information in the cell is always DNARNAprotein.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 Would you expect mRNA or rRNA to be degraded more quickly in the cell? Why?arrow_forward
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