Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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If you make an observation of a living thing and then ask a question about what
you observed, you are
a. | noticing the diversity of life. | c. | solving a
problem. | b. | behaving like a life scientist. | d. | learning how to protect the
environment. |
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2.
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For every organism that has ever lived,
a. | there is only one question to ask. | b. | many questions could be
asked. | c. | every question has already been asked. | d. | every question has already been
answered. |
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3.
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A hypothesis is
a. | a fact. | c. | a possible answer to a question. | b. | a type of
question. | d. | an
experiment. |
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4.
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A controlled experiment
a. | tests several different factors at one time. | b. | has several control
groups. | c. | has more control groups than experimental groups. | d. | has only one
variable. |
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5.
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Which of the following is a limitation of models?
a. | They help explain how something works. | b. | They help describe how something is
structured. | c. | They are different from the real things they are modeling. | d. | They are used to
make predictions. |
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6.
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What is the advantage of creating a model of a dinosaur?
a. | Dinosaurs are too large to easily study. | b. | Real dinosaurs
cannot be studied because they died out long ago. | c. | Dinosaurs are too complicated to study without
a model. | d. | The model is safer to work with. |
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7.
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A unifying explanation for a broad range of observations, facts, and tested
hypotheses is called a
a. | theory. | c. | hypothesis. | b. | law. | d. | conclusion. |
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8.
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Life science has few scientific laws because
a. | people don’t want them. | b. | life scientists have not done enough
experiments. | c. | living organisms are so complex. | d. | scientists need to build more
models. |
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9.
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Many scientific laws
a. | have always been known to be true. | b. | are easily contradicted by new
experiments. | c. | often get broken. | d. | may have started off as hypotheses or
theories. |
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10.
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Which technology would be used to view the surface of a tiny living
organism?
a. | transmission electron microscope | c. | compound light
microscope | b. | scanning electron microscope | d. | computerized tomography
scan |
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11.
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Scientists use computers to
a. | solve complex equations. | c. | produce a three-dimensional
image. | b. | produce magnified images. | d. | provide chemical protection. |
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12.
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Which technology would be used to view a person’s internal organs?
a. | magnetic resonance imagery | c. | electronic
computer | b. | scanning electron microscope | d. | compound light
microscope |
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13.
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In which of the following areas of study might you find a life scientist at
work?
a. | discovering ways to improve computer-operated robots | b. | studying how wasps
could be used to control fire ant populations | c. | studying the relationship between El Niño
and increased flooding | d. | researching the paths of comets and meteors in
space |
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14.
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A scientist who wants to study the possible side effects of a new medicine would
probably
a. | give each experimental group the same dose of medicine. | b. | simply ask the
subjects about the medicine’s effects. | c. | include a control group that received no
medicine. | d. | use different numbers of subjects in each treatment
group. |
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15.
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Which tool would a life scientist use to obtain a detailed image of the nerves
that branch off a person’s spinal cord?
a. | a scanning electron microscope | c. | a transmission electron
microscope | b. | a compound light microscope | d. | an MRI |
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16.
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An advantage of using the International System of Units is that it
a. | is based on measurements of common body parts. | b. | includes easily
understood units of measure, such as inches. | c. | gives scientists a common way to share their
results. | d. | uses different units to measure mass and weight. |
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17.
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In a scientific experiment, a hypothesis that cannot be tested is always
considered to be
a. | incorrect. | c. | not useful. | b. | illogical. | d. | a theory. |
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18.
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Grams are the most useful unit of measurement in determining the mass of
a
a. | truck. | c. | grain of rice. | b. | medium-sized apple. | d. | hippopotamus. |
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19.
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A scientific model
a. | can be a kind of hypothesis. | b. | is usually used to represent something
simple. | c. | is usually concrete. | d. | is used to explain
observations. |
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20.
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In which of the following areas of study might you find a life scientist at
work?
a. | discovering ways to improve computer programs | b. | studying the impact
of non-native plants on marshes | c. | trying to develop a warning system for
tornadoes | d. | researching the composition of asteroids in space |
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21.
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A scientist who wants to study the effects of a new fertilizer on plants would
probably
a. | give each experimental group the same amount of the fertilizer. | b. | not worry about
measuring the amount of fertilizer used. | c. | include a control group that received no
fertilizer. | d. | use different numbers of plants in each treatment
group. |
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22.
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Which tool would a life scientist use to obtain a detailed image of the blood
vessels in a person’s leg?
a. | a scanning electron microscope | c. | a transmission electron
microscope | b. | a compound light microscope | d. | an MRI |
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23.
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What is one advantage of using the International System of Units?
a. | It is based on measurements of common body parts. | b. | It includes easily
understood units of measure, such as pounds. | c. | Almost all units are based on the number
10. | d. | It was developed in France. |
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24.
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A 100 kg object contains the same amount of a matter as a
a. | 1000 g object. | c. | 10,000 g object. | b. | 100,000 g object. | d. | 1,000,000 g
object. |
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25.
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Which work might a life scientist do?
a. | build robots | c. | study what affects flooding | b. | study Siberian
tigers | d. | research comets in
space |
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26.
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Which tool has a tube with lenses, a stage, and a light?
a. | a scanning electron microscope | c. | a transmission electron
microscope | b. | a compound light microscope | d. | an MRI |
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27.
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Which units are part of the International System of Units?
a. | inches | c. | pounds | b. | milliliter | d. | degrees
Fahrenheit |
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28.
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Which is a step of the scientific methods?
a. | asking questions | c. | using technology | b. | stating a theory | d. | building a
microscope |
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29.
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Which is a physical model?
a. | a comparison | c. | a toy airplane | b. | an equation | d. | a graph |
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30.
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What term refers to the amount of space an object takes up?
a. | volume | c. | area | b. | mass | d. | length |
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31.
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Which describes a compound light microscope?
a. | It passes electrons through something to make a 3-D image. | b. | It passes electrons
through something to make a flat image. | c. | It sends electromagnetic waves through the body
to make images. | d. | It is made up of three main parts: a tube with lenses, a stage, and a
light. |
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32.
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Which of the following areas of study is a life scientist most likely to engage
in?
a. | determining the density of various plant species in a rainforest | b. | comparing ocean
currents in various oceans | c. | finding out how to get rid of a computer
virus | d. | studying a volcanic eruption |
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33.
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In which of the following ways is life science beneficial to living
things?
a. | studying rocks on Mars | b. | searching for a cure for
AIDS | c. | trying to design earthquake-proof buildings | d. | studying air
currents |
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34.
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After many experiments, observations, and testing of hypotheses, scientists hope
to develop an explanation for all of them. This explanation would be called a
a. | law. | c. | hypothesis. | b. | theory. | d. | prediction. |
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Matching
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Match each item with the correct statement below. a. | physical model | c. | conceptual model | b. | mathematical
model |
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35.
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a Punnett square
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36.
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a toy train
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37.
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the idea that life originated from chemicals
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38.
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a method of classifying the behavior of animals
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39.
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a dinosaur sculpture in a museum
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Match each item with the correct statement below. a. | area | d. | temperature | b. | volume | e. | length | c. | mass |
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40.
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may be measured in nanometers
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41.
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the amount of space something takes up
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42.
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a measure of the size of a surface or region
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43.
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tells how much energy is in matter
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44.
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may be described in grams or kilograms
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45.
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SI units are kelvins
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46.
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units for solids are cubic
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Match each item with the correct statement below. a. | technology | f. | mass | b. | volume | g. | theory | c. | electron
microscope | h. | law | d. | scientific methods | i. | hypothesis | e. | life
science | j. | compound light
microscope |
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47.
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a possible explanation for observations
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48.
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the amount of space something occupies
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49.
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used to magnify a living specimen
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50.
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set of related hypotheses supported by evidence
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51.
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the use of knowledge, tools, and materials to solve problems and accomplish
tasks
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52.
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the study of living things
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53.
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a series of steps followed by scientists to solve problems
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54.
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used to produce clear and detailed images of nonliving specimens
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55.
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the amount of matter in an object
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56.
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a summary of many experimental results and observations
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Essay
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57.
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Explain how scientific knowledge can change over time.
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Other
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58.
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Use the following terms to complete the concept map below: controlled experiments
observations
new questions
technology
hypothesis
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