.....Each of the following is an example of an inorganiccompound, except
| | bases. |
| | rocks. |
| | salts. |
| | acids. |
| | water. |
A.... Carbohydrates, lipids, and proteins are classified as
| | organic molecules. |
| | bases. |
| | acids. |
| | salts. |
| | inorganic molecules. |
B .... Which of the following substances would be mostacidic?
| | white wine, pH = 3 |
| | tomato juice, pH = 4 |
| | urine, pH = 6 |
| | lemon juice, pH = 2 |
| | stomach secretions, pH = 1 |
C ... A(n) ________ removes hydrogen ions and a(n) ________releases hydrogen ions.
| | base; acid |
| | compound; element |
| | molecule; acid |
| | element; compound |
| | acid; base |
D ... Because water has a high heat of vaporization it
| | serves as an excellent lubricant |
| | participates in chemical reactions |
| | dissolves many substances |
| | provides an excellent cooling mechanism |
E...If a substance has a pH that is greater than 7, it is
| | acidic. |
| | a salt. |
| | a buffer. |
| | neutral. |
| | alkaline. |
F ....The primary high energy molecule formed and used in thecell is
G...Hydrophilic molecules readily associate with
| | water molecules. |
| | hydrophobic molecules. |
| | lipid molecules. |
| | both A and B |
| | all of the above |
H...All of the following are true concerning enzymes,except that they
| | have an active site |
| | are proteins. |
| | are consumed during the reaction. |
| | affect the rate of a chemical reaction. |
| | function as biological catalysts. |
I....Which of the following statements about water isnot correct?
| | can dissolve many substances |
| | is responsible for much of the mass of the human body |
| | is composed of polar molecules |
| | contains hydrogen bonds |
| | has a relatively low heat capacity |
