True/False
Indicate whether the
statement is true or false.
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1.
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The types of particles that are located in the nucleus of an atom are protons
and neutrons, and the types of particles that are located in the energy levels surrounding the
nucleus are electrons.
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2.
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Without enzymes, chemical reactions necessary for life would not occur at a rate
sufficient to sustain life.
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3.
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Organic compounds are substances produced and found in living things.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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4.
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Biology is the study of
a. | minerals. | c. | the weather. | b. | life. | d. | energy. |
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5.
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Homeostasis means
a. | a change over long periods of time. | c. | rapid change. | b. | keeping things the
same. | d. | the same thing as
evolution. |
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6.
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Which of the following is not necessarily a distinct property of living
things?
a. | homeostasis | c. | complexity | b. | metabolism | d. | reproduction |
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7.
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The smallest units that can carry on all the functions of life are called
a. | molecules. | c. | organelles. | b. | cells. | d. | species. |
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8.
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Living things
a. | need energy for life processes. | c. | are composed of
cells. | b. | have the ability to reproduce. | d. | All of the
above |
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9.
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All organisms are composed of
a. | diatoms. | c. | cells. | b. | cellulose. | d. | None of the
above |
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10.
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All living things maintain a balance within their cells and the environment
through the process of
a. | growth. | c. | homeostasis. | b. | development. | d. | evolution. |
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11.
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The English physician Ronald Ross wanted to try to find the cause of malaria.
Based on his observations, Dr. Ross suggested that the Anopheles mosquito might spread malaria
from person to person. This suggestion was a
a. | prediction. | c. | theory. | b. | hypothesis. | d. | scientific
“truth.” |
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12.
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Scientific hypotheses are most often tested by the process of
a. | communicating. | c. | experimenting. | b. | inferring. | d. | analyzing data. |
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13.
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A hypothesis is
a. | a definite answer to a given problem. | b. | a testable possible explanation of an
observation. | c. | a proven statement. | d. | a concluding
statement. |
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14.
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The smallest particle of matter that can retain the chemical properties of
carbon is
a. | a carbon molecule. | c. | a carbon atom. | b. | a carbon macromolecule. | d. | an element. |
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15.
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A substance that is composed of only one type of atom is called a(n)
a. | nucleus. | c. | element. | b. | cell. | d. | molecule. |
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16.
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The bond formed when two atoms share a pair of electrons is called a
a. | hydrogen bond. | c. | covalent bond. | b. | nonpolar bond. | d. | water bond. |
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17.
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An atom that has gained or lost electrons is called a(n)
a. | molecule. | c. | ion. | b. | nucleon. | d. | element. |
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18.
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Enzymes
a. | are able to heat up molecules so that they can react. | b. | provide CO2 for chemical reactions. | c. | are biological
catalysts. | d. | absorb excess heat so that reactions occur at low
temperatures. |
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19.
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A cell contains
a. | thousands of different kinds of enzymes, each promoting a different chemical
reaction. | b. | one kind of enzyme that promotes thousands of different chemical
reactions. | c. | approximately 100 kinds of enzymes, each promoting a different chemical
reaction. | d. | one enzyme that promotes photosynthesis and one enzyme that promotes cellular
respiration. |
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20.
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A solution with a pH of 11 is
a. | acidic. | c. | neutral. | b. | basic. | d. | a buffer. |
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21.
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All organic compounds contain the element
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22.
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Which of the following is a carbohydrate?
a. | DNA | c. | wax | b. | insulin | d. | sucrose |
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23.
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Polysaccharides are
a. | carbohydrates. | c. | proteins. | b. | lipids. | d. | unsaturated
fats. |
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24.
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Amino acids are monomers of
a. | disaccharides. | c. | nucleotides. | b. | proteins. | d. | steroids. |
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25.
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Amino acids are monomers of
a. | disaccharides. | c. | nucleotides. | b. | proteins. | d. | steroids. |
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26.
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Which of the following is not an organic macromolecule?
a. | carbohydrate | c. | lipid | b. | ice | d. | nucleic acid |
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Problem
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27.
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Some scientists conducted an experiment in which they evaluated various
measurements of human health in people who drank at least one cup of coffee a day. They found no
significant differences in these health indicators in the subjects who drank only one cup of coffee a
day and those who drank as many as 20 cups a day. They concluded that coffee has no adverse effects
on human health. Write your answers to the following in the spaces below. a. What were the independent and dependent
variables in this experiment?
b. Was this a controlled experiment?
If so, what were the control and experimental groups?
c. Do you
agree with the conclusion the scientists’ drew from their results? Why or why not?
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Essay
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28.
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The results of an experiment do not support the hypothesis that the experiment
was designed to test. Was the experiment a waste of time? Explain. Write your answer in the space
below.
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