Biology Exam Questions and Answers, Introductory
Biology Final, Biology 1201 Study Guide, College
Biology Test Bank, Biology 1201 Review
Which four elements make up approximately 96% of living matter?
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A) Carbon, hydrogen, oxygen, and nitrogen
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B) Sodium, potassium, calcium, and iron
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C) Water, oxygen, carbon dioxide, and salt
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D) Calcium, phosphorus, potassium, and sulfur -
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answerA) Carbon, hydrogen, oxygen, and nitrogen
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What is the atomic number of an element?
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,A) The number of protons
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B) The number of neutrons
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C) The sum of protons and neutrons
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D) The number of valence electrons - answerA) The number of protons
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How do isotopes of an element differ?
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A) In their number of protons
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B) In their number of electrons
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C) In their number of neutrons
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D) In their atomic number - answerC) In their number of neutrons
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What type of bond involves the sharing of electrons between atoms?
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,A) lonic bond
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B) Hydrogen bond
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C) Covalent bond
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D) Van der Waals interaction - answerC) Covalent bond
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A hydrogen bond can form between:
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A) Two hydrogens in the same molecule
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B) The hydrogen of one molecule and an electronegative atom of ano
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ther
C) Two carbon atoms
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, D) Two positively charged ions -
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answerB) The hydrogen of one molecule and an electronegative atom o
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f another
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CHAPTER 3: Water and Life v v v v
Which property of water is most directly responsible for the ability of ins
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ects to walk on water?
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A) Specific heat
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B) Adhesion
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C) Surface tension
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D) Heat of vaporization - answerC) Surface tension
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