Exam 3: The Chemical Building Blocks of Life

You recently identified a novel protein that contains several membrane-spanning domains.You would predict that the amino acids embedded in the membrane would have ____ side groups.

This atom in its unbound state has four valence electrons.These electrons readily form single, double, and even triple bonds among themselves to become stable.This atom is:

Which of the following reactions is a dehydration reaction?

The human immunodeficiency virus (HIV) uses RNA, rather than DNA, to encode genetic information.During infection, however, HIV uses an enzyme known as reverse transcriptase to generate double-stranded DNA.Generally speaking, how would the enzyme generate a double strand of DNA from a single strand of RNA?

Relatively small organic molecules with a central carbon atom which is bonded to a carboxyl group, an amino group, a carbon containing group, and a hydrogen atom are called:

You have recently identified a novel protein and obtained its sequence.How could you use this sequence to predict the function of the protein?

The myoglobin protein, which carries oxygen in muscle cells, has only the first three levels of protein structure.What can you infer about myoglobin?

Organic molecules have a carbon backbone and _____ such as -OH and -NH₂ that affect their chemical properties.

How many water molecules are produced during the formation of a triglyceride from fatty acids and glycerol?

A double stranded DNA strand contains 26 pyrimidines.How many purines will the copied strand contain?

Lipids are the only class of macromolecules that contain:

A polymer with the sequence 5' ACGTACGAATAG 3' is a:

The simplest and the most common monosaccharide is a six-carbon sugar called:

The formula for glucose is C₆H₁₂O₆.What is the formula for a polymer made by linking ten glucose molecules together by dehydration synthesis?

Carbohydrates are composed of:

What is the difference in the bonding between alpha-helix and beta sheets?

You label cells with a radioactive isotope of sulfur (³⁵S).The only molecules that would be radioactively labeled in these cells are:

You arrive late to a biological seminar.However, just as you enter the room, you hear the speaker referring to the "amino end" and the "carboxyl end" of a macromolecule.Immediately, you know that they are talking about a:

Vitamin D can be synthesized by the body from a derivative of cholesterol.Given this information, predict vitamin D's solubility.

Proteins are created with: