Test Bank - Campbell Biology in Focus, 2nd AP® Edition (Urry, 2017) Chapter 1-43 | All Chapters

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ry


Campbell66Biology66in66Focus,662e66(Urry)66C
hapter6626 6 The66Chemical66Context66of66Lif
e

2.1 Multiple-Choice66Questions

1) About6620-
25%66of66the669266natural66elements66are66known66to66be66essential66to66life.66Which66four66
of66these66elements66make66up66approximately6696%66of66living66matter?
A) carbon,66sodium,66hydrogen,66nitrogen
B) carbon,66oxygen,66phosphorus,66hydrogen
C) oxygen,66hydrogen,66calcium,66nitrogen
D) carbon,66hydrogen,66nitrogen,66oxygen
E) carbon,66oxygen,66nitrogen,66calci
um66Answer:6 6 D
Topic:6 6 Concept662.1
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.1


2) Trace66elements66are66those66required66by66an66organism66in66only66minute66quantities.66
Which66of66the66following66is66a66trace66element66that66is66required66by66humans66and66othe
r66vertebrates?
A) nitrogen
B) calcium
C) iodine
D) sodium
E) phosphorus
66Answer:6 6 C
Topic:6 6 Concept662.1
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.1


3) Trace66elements66are66those66required66by66an66organism66in66only66minute66quantities.66
Which66of66the66following66is66a66trace66element66that66is66required66by66all66organisms?
A) iron
B) calcium
C) iodine
D) sodium
E) potassium
66Answer:6 6
A
Topic:6 6 Concept662.1
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.1




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4) Which66of66the66following66is66primarily66responsible66for66the66unique66chemical66propert
ies66of66each66element?
A) Each66element66has66a66unique66atomic66mass.
B) Each66element66has66a66unique66atomic66number.
C) Each66element66has66a66unique66number66of66protons.
D) Each66element66has66a66unique66number66of66neutrons.
E) Each66element66has66unique66radioactive66prope
rties.66Answer:6 6 C
Topic:6 6 Concept662.2
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.2


5) From66the66atomic66mass,66one66can66deduce66the66number66of66
in66each66atom66of66an66eleme
nt.
A) protons
B) neutrons
C) electrons
D) protons66plus66electrons
E) protons66plus66neutro
ns66Answer:6 6 E
Topic:6 6 Concept662.2
Skill:6 6 Application/Analysis66Lear
ning66Outcome:6 6 2.2

6) In66what66way66are66elements66in66the66same66column66of66the66periodic66table66the66same?
A) They66have66the66same66number66of66protons.
B) They66have66the66same66number66of66neutrons.
C) They66have66the66same66number66of66electrons.
D) They66have66the66same66number66of66electrons66in66their66valence66shell.
E) They66have66the66same66number66of66electron6
6shells.66Answer:6 6 D
Topic:6 6 Concept662.2
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.2


7) In66what66way66are66elements66in66the66same66row66of66the66periodic66table66the66same?
A) They66have66the66same66number66of66protons.
B) They66have66the66same66number66of66neutrons.
C) They66have66the66same66number66of66electrons.
D) They66have66the66same66number66of66electrons66in66their66valence66shell.
E) They66have66the66same66number66of66electron6
6shells.66Answer:6 6 E
Topic:6 6 Concept662.2
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.2



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ry


8) The66nucleus66of66a66nitrogen66atom66contains66766neutrons66and66766protons.66Which66of66the
66following66is66a66correct66statement66concerning66nitrogen?
A) The66nitrogen66atom66has66a66mass66number66of66766and66an66atomic66number66of6614.
B) The66nitrogen66atom66has66a66mass66number66of661466and66an66atomic66number66of667.
C) The66nitrogen66atom66has66a66mass66number66of661466and66an66atomic66number66of6614.
D) The66nitrogen66atom66has66a66mass66number66of66766and66an66atomic66number66of6621.
E) The66nitrogen66atom66has66a66mass66number66of661466and66an66atomic66n
umber66of6621.66Answer:6 6 B
Topic:6 6 Concept662.2
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.2


9) For66elements66in66the66first66three66rows66of66the66periodic66table,66the66position66of66an66ele
ment66in66the66row66indicates66which66of66the66following?
A) the66total66number66of66electrons66in66the66element
B) the66total66number66of66protons66in66the66element
C) the66total66number66of66neutrons66in66the66element
D) the66number66of66electron66orbitals66in66the66element
E) the66number66of66electrons66in66the66valenc
e66shell66Answer:6 6 E
Topic:6 6 Concept662.2
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.2


10) The66chemical66behavior66of66an66atom66depends66primarily66upon66which66of66the66followin
g?
A) the66number66of66neutrons66in66the66nucleus
B) the66number66of66protons66in66the66nucleus
C) the66number66of66electrons66in66the66valence66shell
D) the66total66number66of66electrons66contained66by66the66atom
E) the66number66of66electron66shells66contained66by66th
e66atom66Answer:6 6 C
Topic:6 6 Concept662.2
Skill:6 6 Knowledge/Comprehension
66Learning66Outcome:6 6 2.2




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