Exam 3: Carbon and the Molecular Diversity of Life

A nutritional supplement developed for athletes is shown to contain only carbon, hydrogen, and oxygen. Based on these data, you may safely conclude that

Humans can digest starch but not cellulose because

How many electron pairs does carbon share in order to complete its valence shell?

A carbon skeleton is covalently bonded to both an amino group and a carboxyl group. When placed in water, it

Which of the following is a monomer used to build a biological polymer?

Figure 3.4 -Which of the groups shown in Figure 3.4 is a functional group that helps stabilize proteins by forming covalent cross-links within or between protein molecules?

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

Which functional group is not present in this molecule?

A molecule with the formula C18H36O₂ is probably a

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

Which of the following large biological molecules will self-assemble into a bilayer when mixed with water?

Figure 3.7 - Figure 3.8 Which of the following statements regarding the molecule illustrated in Figure 3.8 is true?

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

How many molecules of water are needed to completely hydrolyze a polysaccharide that is 10 monomers long?

Figure 3.6 -Which molecule shown in Figure 3.6 contains an amino functional group, but is not an amino acid?

Figure 3.12 -Which bond in Figure 3.12 is a peptide bond?

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

A molecule with the chemical formula C₆H₁₂O₆ is probably a

Which of the following are purines?

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