Review Questions
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| 1. |
All
of the following statements are true EXCEPT |
| (A) |
Hydrogen ions have different chemical properties from elemental
hydrogen. |
| (B) |
Carbon isotopes have different chemical properties from
elemental carbon. |
| (C) |
Carbon-14 has six protons and eight neutrons. |
| (D) |
Hydrogen ions are missing an electron. |
| (E) |
Ions have equal numbers of protons and neutrons. |
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| 2. |
How
many atoms are there in C6H12O6? |
| (A) |
3 |
| (B) |
6 |
| (C) |
12 |
| (D) |
24 |
| (E) |
144 |
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| 3. |
Electrons
are shared equally in which of the following chemical bonds? |
| (A) |
Nonpolar covalent bond |
| (B) |
Polar covalent bond |
| (C) |
Ionic bond |
| (D) |
Dipole-dipole bond |
| (E) |
Hydrogen bond |
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| 4. |
How
many single bonds can carbon form with other atoms at the same time? |
| (A) |
1 |
| (B) |
2 |
| (C) |
3 |
| (D) |
4 |
| (E) |
5 |
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| 5. |
What
chemical reaction takes place when two glucose monomers, or monosaccharides,
form a dimer? |
| (A) |
Disassociation |
| (B) |
Dehydration synthesis |
| (C) |
Hydrolysis |
| (D) |
Ionization |
| (E) |
Isomerization |
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| 6. |
Which
of the following polysaccharides stores carbohydrates in animals? |
| (A) |
Cellulose |
| (B) |
Glycogen |
| (C) |
Starch |
| (D) |
Glucose |
| (E) |
Fructose |
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| 7. |
What
are the primary lipids found in cell membranes? |
| (A) |
Glycerol |
| (B) |
Cholestrol |
| (C) |
Fatty acids |
| (D) |
Phospholipids |
| (E) |
Oils |
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| 8. |
What
are the components of nucleotides? |
| (A) |
Glycerols, fatty acids, and phosphates |
| (B) |
Sugars, phosphates, and nitrogenous bases |
| (C) |
Amino groups, hydrogens, and carboxyl groups |
| (D) |
Protons, neutrons, and electrons |
| (E) |
Protons and neutrons only |
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| 9. |
Which
of the following represent a correct pairing of nitrogenous bases? |
| (A) |
Glycerol and uracil |
| (B) |
Guanine and uracil |
| (C) |
Nucleic acids and bases |
| (D) |
Cytosine and adenine |
| (E) |
Adenine and thymine |
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| 10. |
Which
of the following statements is incorrect? |
| (A) |
Enzymes are made from proteins. |
| (B) |
One enzyme can facilitate the reaction of many different
substrates. |
| (C) |
Enzymes sometimes use induced fits to break apart their
substrates. |
| (D) |
Enzymes are not required for spontaneous reactions. |
| (E) |
Not all catalysts are enzymes. |
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