True/False
Indicate whether the
statement is true or false. Please clearly write your answer in the space provided in the left
margin. If you wish to change your answer, please cross it out and write your final answer next
to it. Answers that do not clearly indicate a choice will be marked incorrect.
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1.
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Protons are positively charged particles that have a mass of 1 a.m.u. and are
found in the nucleus.
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2.
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Electrons are negatively charged particles that have a mass of 1 a.m.u. and are
found in the nucleus.
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3.
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An ion is an atom that has lost or gained electons causing it to have a charge
either negative or positive.
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4.
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Carbohydrates are made up of the elements carbon, hydrogen and oxygen.
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5.
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The center of an atom is the nucleus.
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6.
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The following chemical equation is
balanced.
2H2 + O2 -------->
H2O
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7.
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Heat, strong acids, and bases change the shape of an enzyme’s active site
making it non-functional.
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8.
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The smallest particle of an element that has the characteristics of that element
is called a molecule.
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9.
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A solution is a solute dissolved in a solvent.
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10.
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An ionic bond is formed when a positive ion attracts a negative ion.
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11.
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Protons and electrons are found in the nucleus.
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12.
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A covalent bond is made when atoms share electons.
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13.
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Isotopes are atoms of with same number of protons but different numbers of
neutrons.
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14.
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RNA stands for Ribonitrogenous Acid.
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15.
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Lipids are made up of the elements of carbon, hydrogen and nitrogen.
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16.
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A compound is a substance made of just one type of atom.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question. Please clearly write your
answer in the space provided in the left margin. If you wish to change your answer, please
cross it out and write your final answer next to it. Answers that do not clearly indicate a
choice will be marked incorrect.
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17.
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The subunits that lipids are made out of are:
a. | monosaccharides | c. | fatty acids | b. | nucleotides | d. | amino acids |
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18.
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Which of the following choices contail only the elements that make up
proteins?
a. | C, H, O, N, S | c. | C, H, O, N, P, S | b. | C, H, O, N, P | d. | C, H, O |
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19.
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The major group of biomolecules that form the structural materials of the body
and catalyze reactions are:
a. | carbohydrates | c. | nucleic acids | b. | proteins | d. | lipids |
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20.
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Neutral on the pH scale is :
a. | none of these. | c. | 14 | b. | 7 | d. | 1 |
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21.
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Which monosaccharide makes up cellulose, glycogen and starch?
a. | glucose | c. | galactose | b. | fructose | d. | maltose |
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22.
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Which of the following substances is the strongest base?
a. | Lemon (pH =2) | c. | Antacid (pH = 10) | b. | Milk (pH = 6) | d. | Egg white (pH =
8) |
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23.
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An example of a lipid is:
a. | table sugar | c. | egg yolk | b. | egg white | d. | DNA |
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24.
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The subunits that protiens are made out of are:
a. | monosaccharides | c. | nucleotides | b. | amino acids | d. | fatty acids |
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25.
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A(n) _________ is any substance that forms OH- ions in water and has a pH of
greater than 7.
a. | acid | c. | base | b. | ion | d. | element |
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26.
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The major group of biomolecules that provide quick energy is:
a. | nucleic acids | c. | lipids | b. | carbohydrates | d. | proteins |
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27.
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Which of the following choices contains all of the elements found in nucleic
acids?
a. | C, H, O, N, S | c. | C, H, O, N, P, S | b. | C, H, O | d. | C, H, O, N, P |
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28.
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An example of a nucleic acid is:
a. | DNA | c. | egg white | b. | table sugar | d. | egg yolk |
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29.
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Which of the following is considered a function protein?
a. | muscle | c. | enzymes | b. | bone | d. | hair |
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30.
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The subunits that nucleic acids are made out of are:
a. | amino acids | c. | fatty acids | b. | monosaccharides | d. | nucleotides |
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31.
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Which of the following disaccharides is made of glucose and fructose
a. | lactose | c. | maltose | b. | glycogen | d. | sucrose |
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32.
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A(n) _________ is any substance that forms H+ ions in water and has a pH of less
than 7.
a. | base | c. | element | b. | acid | d. | ion |
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33.
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Which of the following is not a part of a nucleotide?
a. | fatty acid | c. | sugar | b. | phosphate | d. | nitrogen base |
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34.
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Which of the following is not a monosaccharide?
a. | fructose | c. | sucrose | b. | glucose | d. | galactose |
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35.
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Which of the following would be considered a structural protein?
a. | water | c. | glycogen in the liver | b. | muscle | d. | fat |
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36.
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An example of a carbohydrate is:
a. | DNA | c. | egg yolk | b. | egg white | d. | sugar |
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37.
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An example of a protein is
a. | DNA | c. | egg yolk | b. | table sugar | d. | egg white |
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38.
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The major group of biomolecules that are the best for long term energy storage
are:
a. | proteins | c. | nucleic acids | b. | carbohydrates | d. | lipids |
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39.
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Which of the following is not a nitrogen base found in RNA?
a. | adenine | c. | thymine | b. | uracil | d. | guanine |
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40.
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The subunits that carbohydrates are made out of are:
a. | amino acids | c. | fatty acids | b. | nucleotides | d. | monosaccharides |
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41.
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The major group of biomolecules that store cellular information are:
a. | proteins | c. | lipids | b. | nucleic acids | d. | carbohydrates |
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