Exam 3: Carbon and the Molecular Diversity of Life

The side chain (R group)of the amino acid serine is -CH₂-OH.The side chain of the amino acid leucine is -CH₂-CH-(CH₃)₂.Where would you expect to find these amino acids in a globular protein in aqueous solution?

A double-stranded DNA molecule contains a total of 120 base pairs.This DNA molecule could be composed of

Why are hydrocarbons insoluble in water?

Which of the following is an example of a hydrolysis reaction?

Figure 3.1 The two molecules shown in Figure 3.1 are best described as

Lactose,a sugar in milk,is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule.How is lactose classified?

Which bonds are created during the formation of the primary structure of a protein?

Testosterone and estradiol are male and female sex hormones,respectively,in many vertebrates.How do these molecules differ from each other?

Figure 3.5 -Which molecule(s)shown in Figure 3.5 is (are)ionized in a cell?

Figure 3.12 -Which bond in Figure 3.12 is farthest from an alpha-carbon?

Which of the following chemical equations describes a hydrolysis reaction?

Figure 3.3 -Which of the structures illustrated in Figure 3.3 could not be formed by typical covalent bonds?

One of the primary functions of RNA molecules is to

Choose the term that correctly describes the relationship between these two sugar molecules:

Which of the following categories includes all others in the list?

Figure 3.5 -Which molecule shown in Figure 3.5 has a carbonyl functional group in the form of a ketone?