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1 | |
The subatomic particle with a negative charge is a(n) |
| | A) | proton |
| | B) | neutron |
| | C) | electron |
| | D) | Subatomic particles have no charge |
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2 | |
The atomic mass of an atom is equal to the number of |
| | A) | protons. |
| | B) | neutrons. |
| | C) | electrons. |
| | D) | protons and neutrons. |
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3 | |
Atoms with the same number of protons and a different number of neutrons are |
| | A) | ions. |
| | B) | isotopes. |
| | C) | positively charged. |
| | D) | negatively charged. |
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4 | |
An atom with 6 protons, 7 neutrons, and 6 electrons has an atomic number of |
| | A) | 6. |
| | B) | 13. |
| | C) | 12. |
| | D) | 7. |
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5 | |
The chemical behavior of atoms is determined by the |
| | A) | electrons. |
| | B) | neutrons. |
| | C) | protons. |
| | D) | atomic mass. |
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6 | |
Which term would not be associated with a covalent bond? |
| | A) | shared electrons |
| | B) | crystal |
| | C) | strong bonds |
| | D) | directional |
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7 | |
Which of the following is a characteristic of water? |
| | A) | ability to form hydrogen bonds |
| | B) | high polarity |
| | C) | cohesion |
| | D) | All are characteristic of water. |
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8 | |
Which one of the following is not a principal macromolecule used to build cells? |
| | A) | crystals |
| | B) | carbohydrates |
| | C) | lipids |
| | D) | proteins |
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9 | |
The largest carbohydrate from the following list would be |
| | A) | sucrose. |
| | B) | fructose. |
| | C) | glucose. |
| | D) | glycogen. |
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10 | |
Amino acids are the subunits that make up |
| | A) | carbohydrates. |
| | B) | lipids. |
| | C) | proteins. |
| | D) | nucleic acids. |
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11 | |
The macromolecule responsible for encoding hereditary information is |
| | A) | ATP. |
| | B) | DNA. |
| | C) | RNA. |
| | D) | glycogen. |
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12 | |
The combining of macromolecule subunits that results in the removal of water is |
| | A) | denaturation. |
| | B) | catalysis. |
| | C) | hydrolysis. |
| | D) | dehydration. |
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13 | |
Nucleotides are made up of |
| | A) | a phosphate group. |
| | B) | a nitrogenous base. |
| | C) | a 5-carbon sugar. |
| | D) | all of the above |
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14 | |
One chain of a DNA double helix contains the sequence CTAACG. The corresponding sequence on the other chain in the double helix would be |
| | A) | CTAACG |
| | B) | TCGGTA |
| | C) | GATTGC |
| | D) | GCAATC |
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15 | |
In a reduction reaction |
| | A) | an electron is lost. |
| | B) | an electron is gained. |
| | C) | an isotope is formed. |
| | D) | hydrogen bonds are formed. |
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16 | |
A fossil that contains one-eighth of the original amount of carbon-14 would be about |
| | A) | 2,800 years old. |
| | B) | 5,600 years old. |
| | C) | 11,200 years old. |
| | D) | 16,800 years old. |
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17 | |
Which of the following places significant evolutionary events in order from earliest to most recent? |
| | A) | oldest eukaryotic fossils, oldest multicellular fossils, oldest prokaryotic fossils |
| | B) | oldest prokaryotic fossils, oldest multicellular fossils, oldest eukaryotic fossils |
| | C) | oldest prokaryotic fossils, oldest eukaryotic fossils, oldest multicellular fossils |
| | D) | oldest multicellular fossils, oldest prokaryotic fossils, oldest eukaryotic fossils |
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18 | |
The most likely candidate for life within the solar system is |
| | A) | Mars |
| | B) | Europa, a moon of the planet Jupitar. |
| | C) | Zeta Herculis |
| | D) | the Great Cluster |
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19 | |
Scientific creationism is science. |
| | A) | true |
| | B) | false |
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20 | |
Polar molecules are hydrophilic. |
| | A) | true |
| | B) | false |
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21 | |
A substance with a pH of 10 will have more hydrogen ions than hydroxide ions. |
| | A) | true |
| | B) | false |
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22 | |
SETI is an organization for mapping human chromosomes. |
| | A) | true |
| | B) | false |
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23 | |
Creationism suggests that life may not have originated on earth but is of extraterrestrial origin. |
| | A) | true |
| | B) | false |
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24 | |
An atom with 4 electrons in its outer shell could accept up to 4 more electrons. |
| | A) | true |
| | B) | false |
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25 | |
A crystal of table salt is held together by hydrogen bonds. |
| | A) | true |
| | B) | false |
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26 | |
Nonpolar substances don't get wet in water. |
| | A) | true |
| | B) | false |
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27 | |
A buffer enhances the completion of a chemical reaction. |
| | A) | true |
| | B) | false |
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28 | |
A polymer is a molecule consisting of a long chain of similar subunits. |
| | A) | true |
| | B) | false |
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29 | |
Most animal fats are saturated, and most plant fats are unsaturated. |
| | A) | true |
| | B) | false |
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30 | |
You could use carbon-14 to date fossils up to 1.3 billion years old. |
| | A) | true |
| | B) | false |
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