Exam 3: Biological Molecules: the Carbon Compounds of Life

Figure 3.18 The molecule shown above is the purine ____.

Which class of molecule is the most diverse in terms of structure and roles played in cells?

Amylose is a polymer made up of glucose monomers joined by ____.

Nucleotides are joined together to make a nucleic acid strand by ____ bonds.

Consider the DNA sequence 5'-GATTACA-3'. If the strand with this sequence forms a double helix with another DNA strand, the sequence on the other strand should be ____.

Which polysaccharide is a chain of glucose units that are modified by having nitrogen-containing groups, is the main structural fiber in the external skeletons of arthropods, and also a structural material in the cell walls of fungi?

Which of these hydrocarbons has a double bond in its structure?

Figure 3.7 The molecule shown above is a(n) ____.

Glucose and fructose, which have the same chemical formula, are considered stereoisomers .

Amino acids, the monomer units comprising proteins, contain two functional groups, amino and carboxyl.

Two structural differences between a uridine monophosphate and thymidine monophosphate are ____ and ____.

Figure 3.8 The molecule shown above is a(n) ____.

Figure 3.17 The molecule in the accompanying figure is the pyrimidine ____, which is typically found in both DNA and RNA.

Figure 3.3 The disaccharide in the accompanying figure is ____.

The sex hormones of many animals are lipid molecules known as ____.

Using what you know about how carbohydrate monomers are linked to form polymers, explain why most animals can digest starch more easily than cellulose?

Figure 3.12 The two amino acids in the accompanying figure both have side chains ( R groups) that are ____.

Probably the most abundant carbohydrate on Earth, which unbranched chain of b-glucose subunits is the primary structural fiber in plant cell walls?

Which functional group acts as an organic base?