1.
Explain the lock-and-key model for enzyme activity. Be sure to comment on what the active site of an enzyme does.
To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
2.
Isoleucine, valine, leucine, phenylalanine, and methionine are amino acids with highly hydrophobic side chains. Suppose a section of a protein contained a long series of these hydrophobic residues. How would you expect this portion of the protein to behave when the molecule is in aqueous solution?
To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
3.
Explain how complementary base pairing makes the copying of RNA and DNA molecules possible. Your answer should include diagrams.
To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
4.
Turn back to Figure 3.8, which shows a generalized cartoon of monomers undergoing condensation reactions to form a polymer. Label the type of bond formed when amino acids polymerize to a polypeptide. Label the type of bond formed when nucleic acids polymerize to form RNA or DNA. Does it take energy for polymerization reactions to proceed, or do they occur spontaneously? Why or why not?
To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
5.
A major theme in this chapter is that the structure of molecules correlates with their function. Explain why DNA’s secondary structure limits its catalytic abilities compared to RNA. Why are proteins the most effective catalysts of all?
To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
