True/False
Indicate whether the sentence or statement is true or
false.
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1.
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The mechanisms used by the body
to detect and destroy pathogens can be specific or nonspecific.
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2.
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Skin acts as one of the first
of the immune systems nonspecific defenses against pathogens.
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3.
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B cells function by attacking
and destroying body cells that have been infected by viruses.
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4.
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The first exposure to a
pathogen results in a much faster immune response than the second exposure to the same
pathogen.
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5.
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If a pathogen that has already
been defeated is encountered again, memory cells produce antibodies against it.
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6.
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Vaccination triggers an immune
response against the pathogen without symptoms of infection.
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7.
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Any person who is HIV-positive
has the disease called AIDS.
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Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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8.
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A disease-causing agent is
called a(n) a. | interferon. | c. | infection. | b. | pathogen. | d. | fungi. | | | | |
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9.
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The first line of defense
against infection includes a. | mucous
membranes. | c. | killer T cells. | b. | neutrophils. | d. | antibodies. | | | | |
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10.
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White blood cells that ingest
invading microbes and cellular debris resulting from microbial attacks are called a. | macrophages. | c. | natural killer cells. | b. | neutrophils | d. | complement cells. | | | | |
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11.
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Which of the following engulfs
foreign cells? a. | helper T cell | c. | macrophage | b. | B cell | d. | antibody | | | | |
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12.
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B cells a. | sometimes remain in the blood for years. | b. | secrete antibodies. | c. | are stimulated by helper T
cells. | d. | All of the above | | |
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13.
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After the initial immune
response subsides, B cells that continue to patrol body tissues a. | are called helper T cells. | c. | become memory cells. | b. | develop into phagocytes. | d. | cannot react to the original antigen. | | | | |
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14.
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Secondary exposure to a
pathogen a. | results in very rapid production of
antibodies. | b. | stimulates memory cells to divide quickly. | c. | may result in destruction of the pathogen before the person knows he or she is
infected. | d. | All of the above | | |
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15.
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The most likely reason for
Response II being greater than Response I in the graph above is a. | more bacteria entered at point C than at point A. | b. | memory cells were produced in Response I. | c. | antibodies from Response I were still in the blood. | d. | macrophages increased their production of antibodies. | | |
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16.
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Autoimmune diseases occur
when a. | cells release antihistamine. | b. | a person is infected with HIV. | c. | the body manufactures anti-self antibodies. | d. | a person receives a blood transfusion of the wrong type. | | |
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17.
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Natural selection is the
process by which a. | the age of selected fossils is calculated. | b. | organisms with traits well suited to their environment survive and reproduce at a
greater rate than less well-adapted organisms in the same environment. | c. | acquired traits are passed on from one generation to the
next. | d. | All of the above | | |
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18.
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The process by which a species
becomes better suited to its environment is known as a. | accommodation. | c. | adaptation. | b. | variation. | d. | selection. | | | | |
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The diagrams below represent
bones in the limbs of fossil horses and modern horses.
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19.
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Refer to the illustration
above. The fossils indicate that horse evolution probably has taken place a. | rapidly. | b. | in only one place on
Earth. | c. | gradually. | d. | five times by the process of punctuated
equilibrium. | | |
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20.
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Which of the following are
examples of fossils? a. | shells or old
bones | b. | any traces of dead organisms | c. | footprints of human ancestors, insects trapped in tree sap, and animals buried in
tar | d. | All of the above | | |
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21.
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Refer to the illustration
above. The similarity of these structures suggests that the organisms a. | have a common ancestor. | c. | evolved slowly. | b. | all grow at different rates. | d. | live for a long
time. | | | | |
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22.
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Refer to the illustration
above. The bones labeled A are known as a. | vestigial
structures. | c. | homologous structures. | b. | sequential
structures. | d. | fossil structures. | | | | |
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23.
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Which of the following is a
vestigial structure? a. | the human
tailbone | c. | flower color | b. | the bill of a
finch | d. | fossil cast | | | | |
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24.
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Researchers found that in
industrialized areas light colored peppered moths a. | were preyed on more often than dark
moths. | b. | were preyed on less often than dark moths. | c. | lived longer, healthier lives than dark moths. | d. | were difficult for predators to see. | | |
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25.
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Protista is an example of
a(n) a. | kingdom. | c. | genus. | b. | class. | d. | species. | | | | |
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26.
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Each level of classification is
based on a. | specific characteristics. | c. | shared
characteristics. | b. | general
characteristics. | d. | All of the above | | | | |
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27.
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A microscope with a
4´ objective lens and a 10´ ocular lens produces a total
magnification of a. | 14´. | c. | 400´. | b. | 40´. | d. | 4000´. | | | | |
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28.
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Refer to the illustration
above. Structure 2 is a. | rough endoplasmic
reticulum. | c. | a mitochondrion. | b. | a Golgi
apparatus. | d. | the nucleus. | | | | |
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29.
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Refer to the illustration
above. The cell uses structure 3 a. | to transport material from one part of the
cell to another. | b. | to package proteins so they can be stored
by the cell. | c. | as a receptor protein. | d. | to produce ATP. | | |
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30.
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The structure that regulates
what enters and leaves the cell is the a. | nucleus. | c. | nuclear
membrane. | b. | cell wall. | d. | cell membrane. | | | | |
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31.
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In a cell, proteins are made on
the a. | mitochondria. | c. | nucleus. | b. | ribosomes. | d. | cell membrane. | | | | |
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32.
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The organelles associated with
plant photosynthesis are the a. | mitochondria. | c. | Golgi apparatus. | b. | chloroplasts. | d. | vacuoles. | | | | |
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33.
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Diffusion is the movement of a
substance a. | only through a lipid bilayer membrane. | b. | from an area of low concentration to an area of higher
concentration. | c. | only in liquids. | d. | from an area of high concentration to an area of lower
concentration. | | |
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34.
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Osmosis is a type
of a. | active transport. | c. | facilitated diffusion. | b. | passive transport. | d. | endocytosis. | | | | |
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35.
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A cell will swell when it is
placed in a(n) a. | hypotonic solution. | c. | isotonic
solution. | b. | hypertonic solution. | d. | None of the
above | | | | |
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36.
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Unlike passive transport,
active transport a. | requires energy. | b. | moves substances down their concentration gradient. | c. | does not involve carrier proteins. | d. | All of the above | | |
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37.
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An artery a. | usually carries oxygen-rich blood. | b. | has thin, slightly elastic walls. | c. | has valves that prevent blood from flowing backward. | d. | All of the above | | |
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38.
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The iron-containing molecule in
red blood cells is called a. | plasma. | c. | hemoglobin. | b. | ferric oxide. | d. | carbonic acid. | | | | |
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39.
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Red blood
cells a. | transport respiratory gases. | c. | destroy viruses. | b. | combat bacterial infection. | d. | transport
cholesterol. | | | | |
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40.
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An abnormality involving the
platelets would probably affect the process of a. | breathing. | c. | fighting bacterial
infections. | b. | locomotion. | d. | blood clotting. | | | | |
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41.
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Pulmonary circulation flows to
and from the a. | stomach. | c. | intestines. | b. | liver. | d. | lungs. | | | | |
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42.
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The heart chamber that receives
blood from the venae cavae is the a. | left
atrium. | c. | left ventricle. | b. | right
atrium. | d. | right ventricle. | | | | |
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43.
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Refer to the illustration
above. The vessels indicated by C in the diagram carry deoxygenated blood. The vessels
are a. | the pulmonary arteries. | c. | parts of the aorta. | b. | the pulmonary veins. | d. | part of the atria. | | | | |
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44.
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Refer to the illustration
above. The chamber in the diagram indicated by F is a. | the right atrium. | c. | the right ventricle. | b. | the left atrium. | d. | the left ventricle. | | | | |
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45.
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Refer to the illustration
above. In the diagram, blood in chamber A a. | is full of
oxygen. | c. | is oxygen poor. | b. | is returning from the vena
cavae. | d. | has very little plasma. | | | | |
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46.
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Refer to the illustration
above. The structure labeled X is the a. | epiglottis. | c. | trachea. | b. | pharynx. | d. | larynx. | | | | |
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47.
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Alveoli in the lungs are
connected to the bronchi by a network of tiny tubes called a. | arterioles. | c. | capillaries. | b. | venules. | d. | bronchioles. | | | | |
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48.
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The actual exchange of gases
occurs at the site of the a. | trachea. | c. | larynx. | b. | nasal passageway. | d. | alveoli. | | | | |
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49.
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Urine leaves the body through
the a. | ureter. | c. | bladder. | b. | urethra. | d. | intestine. | | | | |
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50.
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Refer to the illustration
above. Diagram 2 probably shows the skeleton of a a. | chimpanzee. | c. | bonobo. | b. | gorilla. | d. | hominid. | | | | |
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51.
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Refer to the illustration
above. By examining the skeletons in the diagram, scientists would conclude that both
primates a. | could walk upright on two legs. | c. | had rather large
brains. | b. | had opposable thumbs. | d. | All of the above | | | | |
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52.
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Antennae that
extend from a neuron and that receive information from other cells are called a. | axons. | c. | synapses. | b. | cell
bodies. | d. | dendrites. | | | | |
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53.
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The central nervous system
consists of a. | the brain and spinal cord. | c. | the spinal cord
only. | b. | spinal nerves only. | d. | the brain only. | | | | |
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54.
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Motor neurons transmit
messages a. | to the brain. | b. | to the spinal cord. | c. | from the spinal cord to the
brain. | d. | from the central nervous system to a muscle or
gland. | | |
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55.
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Refer to the illustration
above. Structure B in the diagram is the a. | spinal cord. | c. | cerebellum. | b. | brain
stem. | d. | cerebrum. | | | | |
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56.
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Refer to the illustration
above. The cerebrum is labeled
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57.
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A reflex a. | may involve two or three neurons. | c. | is not learned. | b. | is not under conscious control. | d. | All of the above | | | | |
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Completion
Complete each sentence or statement.
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58.
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Homo habilis, Homo
erectus, and Homo sapiens all belong to the same ____________________.
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59.
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A(n) ____________________ thumb
can be bent toward the other fingers.
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60.
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Nerves that control breathing,
swallowing, heartbeat, and the diameter of the blood vessels are found in the ____________________
____________________.
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