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CLICKER QUESTIONS
For CAMPBELL BIOLOGY, NINTH EDITION
Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Chapter 2
The Chemical Context of Life
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Questions prepared by
William Wischusen
Louisiana State University
Jung Choi
Georgia Institute of Technology
© 2011 Pearson Education, Inc.
A patient is diagnosed with anemia resulting from
iron deficiency. What is the best way to supplement
the patient’s diet with iron?
a) The patient should add fine metallic iron filings to his
morning cereal.
b) The patient should periodically suck on rusty nails.
c) The patient should cook with a cast-iron skillet and eat
vegetables with high iron content, such as spinach.
d) The patient should eat more red meat.
© 2011 Pearson Education, Inc.
Based on the periodic table shown here, which
elements will most likely form an ionic bond?
a) Na and Cl,
and Li and F
b) C and O
c) N and O
d) Si and Cl
e) all of the
above
© 2011 Pearson Education, Inc.
Based on the periodic table shown here, which
elements will most likely form a polar covalent bond?
a) Na and Cl
b) C and O, and
N and O
c) Si and Cl, and
H and H
d) all of the
above
e) none of the above
© 2011 Pearson Education, Inc.
Based on the periodic table shown here, which
elements will most likely form a covalent bond?
a) Na and Cl
b) C and O
c) N and O
d) Si and Cl
e) H and H
© 2011 Pearson Education, Inc.
What do elements with atomic numbers 6, 14,
and 22 have in common?
a) same number of electrons
b) same atomic mass
c) same valence and will form the same number of
covalent bonds
d) all of the above
e) none of the above
© 2011 Pearson Education, Inc.
Living systems differ from nonliving systems
in that
a) living systems are composed largely of unusual
elements.
b) living systems are composed largely of elements with
large (high) atomic numbers.
c) living systems contain large percentages (greater than
10%) of nine elements.
d) living systems combine simple elements in unique
combinations.
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The surface of a planet with life (a biosphere)
would differ from the surface of a planet with no
living organisms in that
a) the planet with a biosphere would have unusual
elements.
b) the surface of the planet with a biosphere would have
more elements with large (high) atomic numbers.
c) the surface of the planet with a biosphere would contain
large percentages of nine elements.
d) the surface of the planet with a biosphere would have
molecules that combine simple elements in unique
combinations.
© 2011 Pearson Education, Inc.
Water is a polar molecule because of the
presence of ___________ bonds.
a) ionic
b) covalent
c) polar covalent
d) hydrogen
e) More than one of the above options is correct.
© 2011 Pearson Education, Inc.
The force of the chemical bond (the attraction
between the different elements)
a) is an electrical attraction.
b) is a unique chemical attraction.
c) results from the sharing of electrons.
d) results from atoms filling their outermost valence
shell.
© 2011 Pearson Education, Inc.
Which of the following observations would
distinguish between the alternative hypotheses that
geckos walk on vertical surfaces via either hydrogen
bonding or van der Waals interactions?
a) Geckos can walk up dry surfaces.
b) Geckos can walk up smooth glass surfaces—silicon
dioxide is a polar, hydrophilic compound.
c) Geckos can walk up smooth plastic surfaces—
plastics are hydrophobic.
© 2011 Pearson Education, Inc.