Test Bank for Biochemistry: Concepts and Connections (MasteringChemistry) 2nd Edition by Dean Appling

,Biochemistry: Concepts and Connections (Appling et al.)
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Chapter 1 Biochemistry and the Language of Chemistry
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1) The water content in the human body is approximately:
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A) 90%.
B) 80%.
C) 70%.
D) 60%.
E) 50%.
Answer: C v




2) The four most abundant chemical elements in living systems are:
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A) hydrogen, oxygen, sulfur and phosphorus.v v v v


B) hydrogen, carbon, nitrogen and oxygen. v v v v


C) sodium, potassium, carbon and oxygen.
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D) sodium, potassium, nitrogen and sulfur.
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E) carbon, nitrogen, oxygen and potassium.
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Answer: B
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Objective: 1.2 v




3) Nearly all proteins contain:
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A) cobalt.
B) phosphorus.
C) selenium.
D) sulfur.
E) none of the above.
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Answer: D
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Objective: 1.2
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Global LO: G7
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4) Which of the following statements is FALSE?
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A) Proteins can be structural components of cells.
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B) Proteins can transmit signals between cells.
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C) Proteins can transport molecules within cells and between cells.
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D) Proteins can be both hormones and hormone receptors.
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E) Proteins are the only biological polymer that can catalyze biochemical reactions.
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Answer: E
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Objective: 1.2 v


Global LO:
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vG7




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,5) Which of the following is NOT classed as a lipid?
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A) Cholesterol
B) Palmitic acid v


C) Glycerol
D) Phosphatidyl serine v


E) Triacylglycerol
Answer: C
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Objective: 1.2
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Global LO: G7
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6) Amino acids and simple organic compounds like carbon dioxide and hydrogen cyanide cannot
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be produced without the use of enzymes.
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Answer: FALSE v


Objective: 1.2
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Global LO: G7
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7) Oxidation-reduction reactions, which are the basis of many biochemical reactions and
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pathways, cannot take place in the absence of oxygen.
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Answer: FALSE v


Objective: 1.2
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Global LO: G7
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8) Many biochemical reactions that form biopolymers from monomeric units involve the
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removal of water.
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Answer: TRUE v


Objective: 1.2
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Global LO: G7
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9) The principle component of a biological membrane is a triglyceride.
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Answer: FALSE
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Objective: 1.2 v


Global LO:
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vG7

10) The chemical element
v v v has a role in both transfer of energy as well as in the
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structure of nucleic acids.
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Answer: phosphorus v


Objective: 1.2
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Global LO: G7
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11) List the four major classes of biological macromolecules.
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Answer: lipids, carbohydrates, proteins, nucleic acids
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Objective: 1.2
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Global LO: G7
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, 12) An amphipathic molecule provides the foundation for biological membranes because they
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have both
v v and v functional groups. v v


Answer: hydrophobic, hydrophilic
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Objective: 1.2
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Global LO: G7 v v




13) Genomics is concerned with the entire
v v v v v v , while
v v is focused on identifying
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all of the proteins of a cell.
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Answer: genome, proteomics
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Objective: 1.5
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Global LO: G1 v v




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