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CAMPBELL BIOLOGY CHAPTER 2 PRACTICE TEST QUESTIONS WITH CORRECT ANSWERS
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CAMPBELL BIOLOGY CHAPTER 2 PRACTICE TEST QUESTIONS WITH CORRECT ANSWERS
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CAMPBELL BIOLOGY CHAPTER 2PRACTICE TEST QUESTIONS WITH
CORRECT ANSWERS
Which of the following four statements, if any, is true regarding essential elements and
living organisms? - Answer-Although all forms of life require iron, other elements are
required only by certain species.
Consider this statement: Concentrations of trace elements in an environment above
what is required by organisms generally have no effect on those organisms. Which of
the following is a valid response to this statement? - Answer-False. Elevated
concentrations of trace elements such as chromium and phosphorus can
be toxic
Consider this statement: Oxygen is not a greenhouse gas; therefore, gases containing
oxygen—such as ozone, nitrous oxide, and carbon dioxide—are not greenhouse gases
either. Which of the following is a valid response to this statement? - Answer-False.
Compounds can have emergent properties that are very different from those of the
elements that form them
There are __________ naturally occurring elements. (eText Concept 2.1) - Answer-92
Which of the following is a trace element? (eText Concept 2.1) - Answer-copper
What are the four most abundant elements found in living systems? (eText Concept 2.1)
- Answer-hydrogen, oxygen, nitrogen, and carbon
Which of the following has negligible mass? (eText Concept 2.2) - Answer-electron
Which of the following subatomic particles has appreciable mass and lacks a charge?
(eText Concept 2.2) - Answer-neutron
The number of protons in an uncharged atom __________. (eText Concept 2.2) -
Answer-equals the number of electrons
An element has eight protons, nine neutrons, and eight electrons. Its atomic number
and atomic mass, respectively, are __________. (eText Concept 2.2) - Answer-8 and
17
An uncharged atom of nitrogen (atomic number = 7) has __________. (eText Concept
2.2) - Answer-seven protons and seven electrons
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