Biochemistry 9th Edition TEST BANK Campbell Farrell McDougal
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BIOC 3621 (BIOC3621)
Institución
University Of North Texas
Biochemistry 9th Edition TEST BANK Campbell Farrell McDougal
1. The tendency for an atom to attract electrons to itself in a chemical bond is called
a. polarity.
b. electronegativity.
c. hydrophilicity
d. electrophilicity.
2. If atoms with greatly differi...
biochemistry 9th edition test bank campbell farrel
the tendency for an atom to attract electrons to i
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University Of North Texas
BIOC 3621 (BIOC3621)
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Chapter 02 - Water: The Solvent for Biochemical Reactions
Biochemistry 9th Edition TEST BANK Campbell Farrell McDougal
1. The tendency for an atom to attract electrons to itself in a chemical bond is called
a. polarity.
b. electronegativity.
c. hydrophilicity
d. electrophilicity.
ANSWER: b
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: CAFA.BIOC.15.1 - New in
6e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
2. If atoms with greatly differing electronegativities form a bond, that bond will be
a. polar.
b. nonpolar.
c. amphipathic.
d. acidic.
ANSWER: a
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: CAFA.BIOC.15.1 - New in
6e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
3. Many of the properties of water can be accounted for by the fact that
a. it is polar
b. it forms hydrogen bonds
c. it is a bent molecule
d. all of these are true
,Chapter 02 - Water: The Solvent for Biochemical Reactions
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: CAFA.BIOC.15.6 - Modified in
7e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
4. Which of the following is true about ionic compounds?
a. They are more likely to dissolve in non-polar solvents than covalent compounds.
b. They always dissolve completely in water.
c. They never dissolve in polar solvents.
d. Some of them dissolve completely in water or other polar solvents, while others do not.
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: CAFA.BIOC.15.4 - New in 7e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
5. Which of the following is a correct listing of electronegativity values, from low to high?
a. C, H, O, N
b. N, H, O, C
c. H, C, N, O
d. H, C, O, N
ANSWER: c
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14
PM
DATE MODIFIED: 12/23/2013 2:14
PM
6. Which of the following elements has the highest electronegativity?
a. C
b. H
c. N
d. O
e. P
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
,Chapter 02 - Water: The Solvent for Biochemical Reactions
HAS VARIABLES: False
LEARNING OBJECTIVES: CAFA.BIOC.15.5 - Modified from
5e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
7. The water molecule is polar because:
a. Electrons are not distributed symmetrically in the molecule.
b. The hydrogen atoms are found on one "side" of the molecule.
c. Hydrogen is less electronegative than oxygen.
d. The hydrogen atoms are found on one "side" of the molecule and hydrogen is less electronegative than
oxygen.
e. All of these are correct.
ANSWER: e
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
8. Which of the following molecules is polar?
a. CCl4
b. CH4
c. CO2
d. NH3
e. None of these molecules is polar.
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
LEARNING OBJECTIVES: CAFA.BIOC.15.5 - Modified from
5e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
9. Which of the following molecules is amphipathic?
a. sodium chloride
b. acetic acid
c. benzene
d. palmitic acid
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
, Chapter 02 - Water: The Solvent for Biochemical Reactions
LEARNING OBJECTIVES: CAFA.BIOC.15.5 - Modified from
5e
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14 PM
DATE MODIFIED: 12/23/2013 2:14 PM
10. Which of the following classes of compounds is hydrophilic?
a. Sugars
b. Fatty acids
c. Amino acids
d. Sugars and amino acids.
e. All of these
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14
PM
DATE MODIFIED: 12/23/2013 2:14
PM
11. Which of the following classes of compounds is hydrophobic?
a. Table Salt
b. Cholesterol
c. Phosphate esters
d. Cholesterol and phosphate esters.
e. All of these are hydrophobic.
ANSWER: b
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: Water and Polarity
DATE CREATED: 12/23/2013 2:14
PM
DATE MODIFIED: 12/23/2013 2:14
PM
12. Which of the following molecules has polar bonds but is itself not polar?
a. NH3
b. CO2
c. CH4
d. H2O
ANSWER: b
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
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