Solution A increases its acidity. This means that the
A. pH of the solution has increased.
B. number of hydrogen ions has increased.
C. solution is closer to neutrality.
D. solution will now accept more protons.
E. number of hydrogen ions has decreased.
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Question 2) Hyperventilation causes the loss of large amounts of carbon dioxide from the body, decreasing the amount of hydrogen ions in solution. As a result,
A. the pH of body fluids will rise.
B. the pH of body fluids will fall.
C. the pH of body fluids will become neutral.
D. the pH of body fluids will not be affected.
E. None of these choices is correct.
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Question 3) A solution that contains one osmole of solute in one kilogram (kg) of water is called a
A. 1 solution.
B. 1 molar solution.
C. 10 solution.
D. 1 osmolal solution.
E. None of these choices are correct.
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Question 4) Substances dissolved in the liquid portion of a solution are called
A. solvents.
B. insoluble.
C. catalysts.
D. osmoles.
E. solutes.
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Question 5) Two solutions, A and B, have the same osmolality.
A. Both solutions have the same number of solute particles.
B. Solution A is pure water and solution B is water and salt.
C. Solution A is water and sugar, solution B is water and salt.
D. Solution A has more solute particles than solution B.
E. Solution B has more solute particles than solution A.
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Question 6) Why is water involved in most metabolic reactions in the human body?
A. It has a high surface tension.
B. It is a solute.
C. Its bonds are nonpolar.
D. It can dissolve many chemical compounds.
E. It can absorb and release heat without changing temperature very much.
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Question 7) The hydrogen and oxygen atoms in a molecule of water are held together by
A. peptide bonds.
B. ionic bonds.
C. nonpolar bonds.
D. savings bonds.
E. polar covalent bonds.
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Question 8) The molecular formula H2O means
A. 1 hydrogen atom and 2 oxygen atoms.
B. 1 hydrogen atom and 1 oxygen atom.
C. 2 hydrogen atoms and 1 oxygen atom.
D. 2 hydrogen atoms and 2 oxygen atoms.
E. None of these choices is correct.
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Question 9) The presence of water in our bodies allows us to
A. cool the body with sweat.
B. maintain a fairly constant body temperature.
C. provide an environment for chemical reactions.
D. keep tissues moist and reduce friction.
E. All of these choices are correct.
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Question 10) Which of the following is an organic compound?
A. hydrochloric acid (HCl)
B. salt (NaCl)
C. sucrose (C12H22O11)
D. water (H2O)
E. None of these choices are correct.
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