Which of the following types of interactions are not made between R groups of proteins? O Hydrogen bonds lonic bonds O Disulfide bridges or disulfide bonds All of the above are found between R groups

Question 65 Which statement best explains why alcohols have a higher boiling point than Alcohols have weaker intermolecular forces than alkanes. Alcohols have London dispersion forces only and alkanes have dipole-dipole attracti None of the choices are correct. Alcohols have stronger London dispersion forces than alkanes. Alcohols have strong hydrogen bonding forces between molecules and alkanes have Question 66 Which statement concerning the double helix structure of DNA is FALSE? The helix completes one turn every 10 base pairs. The two strands of the double helix are called parallel strands. Base pairs in the double helix are attached by way of hydrogen bonding. The base pairs are directed in toward the middle of the double helix. In the double helix, adenine connects to thymine and cytosine connects to guanine. D

QUESTION 22 When double-stranded DNA is heated at neutral pH, which change does not occur? The N-glycosidic bond between the base and the pentose breaks The helical structure unwinds The absorption of ultraviolet (260 nm) light increases The viscosity of the solution decreases The hydrogen bonds between A and T break

QUESTION 1 The relative amounts of each nucleotide base are tabulated below for four different viruses. Virus T CUG A 1 34 42 0 18 39 || III 0 24 35 27 17 0 12 9 12 9 IV 23 16 0 16 23 For each virus, indicate whether its genetic material is DNA vs. RNA and double-stranded vs. single-stranded by putting the correct letter in the box next to each virus. Every choice will be used once and only once. Virus I: Virus II: Virus III: Virus IV: a. Single-stranded DNA b. Double-stranded DNA c. Single-stranded RNA d. Double-stranded RNA