Test Bank for Biochemistry: Concepts and Connections, 2nd Edition by Dean R. Appling, Spencer J. Anthony-Cahill & Christopher K. Mathews | Complete Questions & Answers | Study Guide

,Biochemistry: Concepts and Connections (Appling et al.)
x x x x x x


xChapter 1 Biochemistry and the Language of Chemistry
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1) The water content in the human body is approximately:
x x x x x x x x


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




2) The four most abundant chemical elements in living systems are:
x x x x x x x x x


A) hydrogen, oxygen, sulfur and phosphorus.
x x x x


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


C) sodium, potassium, carbon and oxygen.
x x x x


D) sodium, potassium, nitrogen and sulfur.
x x x x


E) carbon, nitrogen, oxygen and potassium.
x x x x


xAnswer: B x


Objective: 1.2 x




3) Nearly all proteins contain:
x x x


A) cobalt.
B) phosphorus.
C) selenium.
D) sulfur.
E) noneof the above.
x x x


xAnswer: D x


xObjective: 1.2 x


xGlobal LO: G7
x x




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.
x x x x x


C) Proteins can transport molecules within cells and between cells.
x x x x x x x x


D) Proteins can be both hormones and hormone receptors.
x x x x x x x


E) Proteins are the only biological polymer that can catalyze biochemical reactions.
x x x x x x x x x x


xAnswer: E x


Objective: 1.2 x


xGlobal LO:x


xG7




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,5) Which of the following is NOT classed as a lipid?
x x x x x x x x x


A) Cholesterol
B) Palmitic acid x


C) Glycerol
D) Phosphatidyl serine x


E) Triacylglycerol
xAnswer: C x


xObjective: 1.2 x


xGlobal LO: G7
x x




6) Amino acids and simple organic compounds like carbon dioxide and hydrogen cyanide cannot
x x x x x x x x x x x x


xbe produced without the use of enzymes.
x x x x x x


Answer: FALSE x


xObjective: 1.2 x


xGlobal LO: G7
x x




7) Oxidation-reduction reactions, which are the basis of many biochemical reactions and x x x x x x x x x x


xpathways, cannot take place in the absence of oxygen.
x x x x x x x x


Answer: FALSE x


xObjective: 1.2 x


xGlobal LO: G7
x x




8) Many biochemical reactions that form biopolymers from monomeric units involve the
x x x x x x x x x x


xremoval of water. x x


Answer: TRUE x


xObjective: 1.2 x


xGlobal LO: x


x G7

9) The principle component of a biological membrane is a triglyceride.
x x x x x x x x x


xAnswer: FALSE x


Objective: 1.2 x


xGlobal LO: x


G7

10) The chemical element
x x x has a role in both transfer of energy as well as in the
x x x x x x x x x x x x


xstructure of nucleic acids.
x x x


Answer: phosphorus
x


xObjective: 1.2 x


xGlobal LO: G7
x x




11) List the four major classes of biological macromolecules.
x x x x x x x


xAnswer: lipids, carbohydrates, proteins, nucleic acids
x x x x x


xObjective: 1.2 x


Global LO: G7
x x




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x x x x x

, 12) An amphipathic molecule provides the foundation for biological membranes because they
x x x x x x x x x x


xhave both
x and x functional groups. x x


Answer: hydrophobic, hydrophilic
x x


xObjective: 1.2 x


Global LO: G7 x x




13) Genomics is concerned with the entire
x x x x x x , while
x x is focused on identifying
x x x


xall of the proteins of a cell.
x x x x x x


Answer: genome, proteomics
x x


xObjective: 1.5 x


Global LO: G1 x x




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x x x x x