Problem 85
In what ways do DNA and RNA differ structurally?
Problem 86
Which base pairs with (a) \(\mathrm{A}\) in DNA, (b) \(A\) in \(\mathrm{RNA},\) and (c) C in DNA or RNA?
Problem 87
The process of transcription begins with which nucleic acid and ends with which one?
Problem 88
The process of translation begins with which nucleic acid? What is the end result of translation?
Problem 103
Write the structures of the products that form when ethylene reacts with each of the following substances by an addition reaction. (Assume that needed catalysts or other conditions are provided.) (a) \(\mathrm{H}_{2}\) (c) \(\mathrm{Br}_{2}\) (e) \(\operatorname{HBr}(g)\) (b) \(\mathrm{Cl}_{2}\) (d) \(\mathrm{HCl}(g)\) (f) \(\mathrm{H}_{2} \mathrm{O}\) (in acid)
Problem 104
The isopropyl cation is more stable than the propyl cation, so the former forms almost exclusively when propene undergoes addition reactions with protondonating species. On the basis of this fact, predict the final products of the reaction of propene with each of the following reagents: (a) hydrogen chloride (b) hydrogen iodide (c) water in the presence of an acid catalyst
Problem 107
If one mole of benzene were to add one mole of \(\mathrm{Br}_{2}\), what would form? What forms, instead, when \(\mathrm{Br}_{2}\), benzene, and a \(\mathrm{FeBr}_{3}\) catalyst are heated together? (Write the structures.)
Problem 108
Predict the products of the reaction of benzene and nitric acid with a sulfuric acid catalyst.
Problem 109
Write condensed structures and the IUPAC names for all of the saturated alcohols with three or fewer carbon atoms per molecule.
Problem 110
Write the condensed structures and the IUPAC names for all of the possible alcohols with the general formula \(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\).
