Deck 1: Biochemistry and the Language of Chemistry

Question 1

The water content in the human body is approximately:

A) 90%.
B) 80%.
C) 70%.
D) 60%.
E) 50%.

Answer 1

C

Question 2

The four most abundant chemical elements in living systems are:

A) hydrogen, oxygen, sulfur and phosphorus.
B) hydrogen, carbon, nitrogen and oxygen.
C) sodium, potassium, carbon and oxygen.
D) sodium, potassium, nitrogen and sulfur.
E) carbon, nitrogen, oxygen and potassium.

Answer 2

B

Question 3

An amphipathic molecule provides the foundation for biological membranes because they have both ________ and ________ functional groups.

Answer 3

hydrophobic, hydrophilic

Question 4

Many biochemical reactions that form biopolymers from monomeric units involve the removal of water.

Question 5

Oxidation-reduction reactions, which are the basis of many biochemical reactions and pathways, cannot take place in the absence of oxygen.

Question 6

Nearly all proteins contain:

A) cobalt.
B) phosphorus.
C) selenium.
D) sulfur.
E) none of the above.

Question 7

Genomics is concerned with the entire ________, while ________ is focused on identifying all of the proteins of a cell.

Question 8

The chemical element ________ has a role in both transfer of energy as well as in the structure of nucleic acids.

Question 9

The principle component of a biological membrane is a triglyceride.

Question 10

Amino acids and simple organic compounds like carbon dioxide and hydrogen cyanide cannot be produced without the use of enzymes.

Question 11

List the four major classes of biological macromolecules.

Question 12

Which of the following statements is FALSE?

A) Proteins can be structural components of cells.
B) Proteins can transmit signals between cells.
C) Proteins can transport molecules within cells and between cells.
D) Proteins can be both hormones and hormone receptors.
E) Proteins are the only biological polymer that can catalyze biochemical reactions.

Question 13

Which of the following is NOT classed as a lipid?

A) Cholesterol
B) Palmitic acid
C) Glycerol
D) Phosphatidyl serine
E) Triacylglycerol