Transcript d. a single variable.

• 1. Which of the following
is NOT a goal of science?
• a. to investigate and
understand the natural world
• b. to explain events in the
natural world
• c. to use data to support a
particular point of view
• d. to use derived
explanations to make useful
predictions
• c. to use data to support a
particular point of view
• 2. Information
• d. data.
gathered from observing
a plant that grows 3 cm
over a two-week period
results in
• a. inferences.
• b. variables.
• c. hypotheses
• d. data.
• 3. Which of the following
is NOT a way that scientists
generate hypotheses?
• a. using informed,
creative imagination
• b. using logical inference
• c. using prior knowledge
• d. using a feeling about
what should occur
• d. using a feeling about
what should occur
• 4. Scientific hypotheses
must be proposed in a way
that
• a. ensures that an
experiment will be valid.
• b. enables them to be
proved valid.
• c. enables them to be
tested.
• d. doesn’t contradict
previous hypotheses.
• c. enables them to be
tested.
• 5. A controlled
experiment allows the
scientist to isolate and
test
• a. a conclusion.
• b. a mass of
information
• c. several variables.
• d. a single variable.
• d. a single variable.
• 6. The ability to
reproduce results is
an important part of
any
• a. hypothesis.
• c. law.
• b. theory.
• d. experiment.
• d. experiment
• 7. A theory
• a. is always true.
• b. is the opening
statement of an
experiment.
• c. may be revised or
replaced.
• d. is a problem to be
solved.
• c. may be revised or
replaced.
• 9. The amount of light
and temperature are
examples of
• a. factors necessary for
life.
• b. methods of energy
production.
• c. factors to which living
things respond.
• d. factors that affect
reproduction.
• c. factors to which
living things respond.
10.The basic unit of mass in the
International System of Units,
or SI, is the
• a.meter.
c.liter.
• b.ounce.
d.gram
• d.gram
• 11. The space
surrounding the
nucleus of an atom
contains
• a.protons. c.neutrons.
• b.electrons. d.ions.
• b.electrons.
• What type of electron
is available to form
bonds?
• a.valence c.ionic
• b.nucleus d.covalent
• a.valence
• 13. What type of ion
forms when an atom
loses electrons?
• a.neutral c.negative b.positive
d.possibly positive or negative
• b.positive
• 14. The most
abundant compound
in most living things is
• a.carbon dioxide.
• c.sodium chloride.
• b.water.
• d.sugar.
• b.water.
• 15. A
monosaccharide is a
• a.carbohydrate.
• c.nucleic acid.
• b.lipid
• d.protein.
• a.carbohydrate.
• 16. Which statement
is true?
• a.Simple sugars are
made of polysaccharides
• b.Glycerol is made of
fatty acids.
• c.RNA molecules are
made of nucleotides.
• d.Amino acids are made
of proteins.
• c.RNA molecules are
made of nucleotides.
• 17. When hydrogen
and oxygen combine
to form water, water
would be
• a.a product.
• c.both a product and a
reactant.
• b.a reactant.
• d.neither a product nor a
reactant.
• a.a product.
• 18. If a reaction in one • b.absorbs energy.
direction releases
energy, the reaction
in the opposite
direction
•
•
•
•
a.also releases energy
.c.destroys energy.
b.absorbs energy.
d.cannot occur.
• 19. Enzymes affect the
reactions in living cells by
changing the
• a. products of the
reaction.
• b. speed of the reaction
• c. temperature of the
reaction.
• d. pH of the reaction.
• b. speed of the
reaction.
• The work of scientists
begins with
• a. testing a hypothesis.
• c. creating experiments.
• b. careful observations.
• d. drawing conclusions.
• b.
careful observations.
•
21.
Hypotheses
may arise from
• A. prior knowledge.
B. logical inferences.
• C. imaginative
guesses.
• D. all of the above
j. Your mom
• D. all of the above
• 22. A controlled
• d. a single variable.
experiment allows the
scientist to isolate and
test
• a. a conclusion.
• b. a mass of
information.
• c. several variables.
d. a single variable.
• 23. Scientists publish the
details of important
experiments so that
• a. their work can be
repeated.
• b. their experimental
procedures can be
reviewed.
• c. others can try to
reproduce the results.
• d. all of the above
• d. all of the above
• 24. A well-tested
explanation that
unifies a broad range
of observations is a
(an)
• a. hypothesis.
• b. theory.
• c. inference.
• d. controlled
experiment.
• b. theory.
• 25. All of the following
are characteristics of
all living things
EXCEPT
• a. growth.
• b. reproduction.
• c. movement.
• d. use of energy.
• c. movement.
• 26. The process by
which organisms
keep their internal
conditions fairly
constant is called
• a. homeostasis.
• b. evolution.
• c. metabolism.
• d. photosynthesis.
• a. homeostasis.
• 27. Which is NOT a
unit of measurement
in the International
System of Units, or
SI?
• a. meter
• b. ounce
• c. liter
• d. gram
• b. ounce
• 28. The three particles
that make up an atom are
• a. protons, neutrons, and
isotopes.
• b. neutrons, isotopes, and
electrons.
• c. positives, negatives,
and electrons.
• d. protons, neutrons, and
electrons.
• d. protons, neutrons, and
electrons.
• 29. The nucleus is
made of
• a. protons and
electrons.
• b. electrons and
neutrons.
• c. protons and
neutrons.
• d. protons, neutrons,
and electrons.
• c. protons and
neutrons.
• 30. Which of the
following terms describes
a substance formed by
the combination of two or
more elements in definite
proportions?
• a. compound
• b. isotope
• c. nucleus
• d. enzyme
• a. compound
• 31. A covalent bond is
formed as the result
of
• a. transferring
electrons.
• b. sharing electrons.
• c. transferring
protons.
• d. sharing protons.
• b. sharing electrons.
• 32. Which of the
following organic
compounds is the
main source of
energy for living
things?
• a. carbohydrates
• c. nucleic acids
• b. lipids
• d. proteins
• a. carbohydrates
• 33. Which of the
following is NOT a
function of proteins?
• a. store and transmit
heredity
• b. help to fight disease
• c. control the rate of
reactions and regulate
cell processes
• d. used to form bones
and muscles
• a. store and transmit
heredity
• 34. What is the
process that changes
one set of chemicals
into another set of
chemicals?
• a. cohesion
• b. adhesion
• c. chemical reaction
• d. dissolving
• c. chemical reaction
• 35. What is the term
used to describe the
energy needed to get
a reaction started?
• a. adhesion energy
• b. activation energy
• c. cohesion energy
• d. chemical energy
• b. activation energy
• 36. Chemical
• d. often occur
reactions that release
spontaneously.
energy
• a. will not occur.
• b. will never explode.
• c. will always explode.
• d. often occur
spontaneously.
• 37. A substance that
speeds up the rate of
a chemical reaction is
called a (an)
• a. catalyst.
• b. lipid.
• c. molecule.
• d. element.
• a. catalyst.
• 38. The information
you gather during an
experiment is called
your
_______________.
• 38. Data.
• 39. Based on his
________________,
Redi made a
prediction that
keeping flies away
from meat would
prevent maggots
appearing on the
meat.
• 39. Hypothesis
• Reference: p. 9
• 40. A variable that is
deliberately changed
in an experiment is
the ______________
variable.
• 40. Manipulated or
independent
• 41. The information
gathered from
observation is called
______________.
• 41. Data.
• 42. The smallest units
that are considered to
be alive are called
_______________.
• 42. Cells.