Biochemistry: Concepts and Connections – Test Bank (2nd Edition, Appling, Anthony-Cahill & Mathews) – Complete Exam Questions

BIOCHEMISTRY
Biochemistry: Concepts and Connections – Test Bank (2nd Edition,

Appling, Anthony-Cahill & Mathews) – Complete Exam Questions


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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%.

Accurate Answer: C
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2) The four most abundant chemical elements in living systems are :
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A) hydrogen, oxygen, sulfur and phosphorus.
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B) hydrogen, carbon, nitrogen and oxygen.
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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. Accurate Answer: B
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Objective: 1.2
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3) Nearly all proteins contain :
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A) cobalt.

B) phosphorus.

C) selenium.

D) sulfur.

E) none of the above. Accurate Answer: D Objective: 1.2 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. Accurate
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Answer: E
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Objective: 1.2 Global LO: G7
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5) Which of the following is NOT classed as a lipid?
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A) Cholesterol

B) Palmitic acid b




C) Glycerol

D) Phosphatidyl serine b




E) Triacylglycerol Accurate Answer: C Objective: 1.2 Global LO: G7 b b b b b b b b




6) Amino acids and simple organic compounds like carbon dioxide and hydrogen cyanide cannot be
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produced without the use of enzymes.
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Accurate Answer: FALSE Objective: 1.2 Global LO: G7
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7) Oxidation-reduction reactions, which are the basis of many biochemical reactions and pathways,
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cannot take place in the absence of oxygen.
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Accurate Answer: FALSE Objective: 1.2 Global LO: G7
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8) Many biochemical reactions that form biopolymers from monomeric units involve the removal of
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water.
b




Accurate Answer: TRUE Objective: 1.2 Global LO: G7
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9) The principle component of a biological membrane is a triglyceride. Accurate Answer: FALSE
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Objective: 1.2 Global LO: G7
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, 10) The chemical element
b b has a role in both transfer of energy as well as in the structure of nucleic
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acids.
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Accurate Answer: phosphorus Objective: 1.2 Global LO: G7
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11) List the four major classes of biological macromolecules. Accurate Answer: lipids, carbohydrates,
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proteins, nucleic acids 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 have both
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and functional groups.
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Accurate Answer: hydrophobic, hydrophilic Objective: 1.2
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Global LO: G7
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13) Genomics is concerned with the entire b b b b b , while is focused on identifying all of the proteins of a
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cell.
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Accurate Answer: genome, proteomics Objective: 1.5
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Global LO: G1
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Chapter 2 The Chemical Foundation of Life: Weak Interactions in an Aqueous
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Environment b




1) Each of the following is a non-covalent interaction EXCEPT :
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A) a hydrogen bond.
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B) a carbon-hydrogen bond.
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C) the interaction between an amino and a carboxylate group.
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D) a van der Waals interaction.
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E) an interaction between —NH3+ and a water molecule. Accurate Answer: B
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Objective: 2.1 Global LO: G7
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