16. Which of the following choices correctly describes the molecular structure of a..ova A. There are long chains that often include an alkene, B. They tend to be nonpolar structures. Both A andB are correct. C. D. Neither A nor B is correct.

2. What are the greatest structural features that differentiate sphingolipids from phosphoglycerides?

3. Consider the structure of ubiquinone (CoQ) and its physical location(s) in the ETC. Propose a function of the long hydrocarbon chain attached to the ring structure.

Polymers are... a. synthesized via hydrolysis reactionsb. broken down via dehydration reactionsc. made up of monomer chainsd. all of the abovee. none of the above

1. Draw a circle around and give the name of each functional group in the following twomolecules. (Note: each line represents a covalent bond. If no atom is shown, assume there’s a carbon there.)

B A E D Reaction Progress Potential Energy

6. Hydrolysis reactions are a very common type of organic reaction. Describe what happens in a hydrolysis reaction and give two different examples of hydrolysis reactions involving carbohydrates, lipids, or amino acids (each example should involve different types of compounds, ex: one example using carbohydrates and another example using lipids.). Indicate what types of compounds are involved in each example.

1. Which of the following are building blocks of proteins? а. amino acids b. monosaccharides с. nucleotides d. peptides fatty acids е. 2. Which of the following statements is true regarding DNA structure? a. DNA is composed of amino acids. b. In DNA, purines pair together and pyrimidines pair together. с. DNA forms a double helix. d. DNA is single-stranded.