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Bio 101 scientific method Flashcards | StudBud
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Bio 101 scientific method
Bio 101 scientific method
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Flashcards
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Questions
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Answers
1
A scientist performs a controlled experiment. This means that
the experiment proceeds slowly to guarantee accurate data.
the experiment is repeated many times.
one experiment is run and all the variables are controlled.
two experiments are run differing by only one variable.
2
Which of the following are agents of natural selection?
predation
competition
all of the above
changes in the environment
3
In the virtual lab, genetically engineered crops will increase the need for insecticides.
false
true
4
Pick the correct sequence from largest to smallest.
kingdom, family, species, genus, order, class, phylum
species, genus, family, class, order, phylum, kingdom
genus, species, class, family, phylum, order, kingdom
kingdom, phylum, class, order, family, genus, species
5
Which of the following is a characteristic of living things?
cellular organization.
reproduction.
All of the above.
metabolism.
6
A unifying explanation for a broad range of observations is called
a hypothesis.
a prediction.
a theory.
a controlled experiment.
7
A hypothesis is a
testable possible explanation of an observation.
proven statement.
concluding statement.
definite answer to a given problem.
8
Adaptations may be physical or behavioral.
false
true
9
A theory is supported by many forms of evidence.
true
false
10
Homeostasis is maintaining a constant internal environment.
false
true
11
Which of these is NOT a property of all living organisms?
organization
acquisition of materials and energy
responding to the environment
care for their offspring
12
Mice are given different amounts of sweetener in their food. Which would be the control group?
10 mg/day of sweetener.
extra food.
no sweetener.
50 mg/day of sweetener.
13
Zebras run away from lions. This is an example of
living things are organized.
living things evolve.
living things respond.
living things reproduce.
14
The independent variable is the variable that changes in an experiment.
false
true
15
All living things are able to reproduce.
false
true
16
The level of organization that includes cells of similar structure and function would be
an organism.
a tissue.
an organ system.
an organ.
17
In the corn biomass lab, which of the following is true?
Using different seeds was the independent variable.
An acid solution has no effect on plant growth.
The lima beans seeds produced the most biomass.
The independent variable was the amount of growth.
18
The word theory used in scientific sense means
a guess with very little scientific support.
an absolute scientific certainty.
none of the above.
that of wish the scientist is most certain.
19
A trait selected for in evolution may later be selected against if the environment changes.
false
true
20
Jane was grows cucumbers and one summer uses fertilizer and one summer without.
This is not valid because she did not do a hypothesis.
This is not valid because she used different cucumbers.
This is not valid because she did not have a control group.
This is not valid because there are too many variables.
21
All living things maintain an internal balance called
evolution.
development.
growth.
homeostasis.
22
A hypothesis that is not supported by the data
is rejected.
often predicts a different observation.
is known as an inaccurate forecast.
none of the above.
23
The energy that drives metabolism in animals comes from
homeostasis.
water.
food.
heredity.
24
The control and experimental groups are designed to be identical.
false
true
25
Natural selection always results in organisms becoming more adapted to their environment.
true
false
26
"BT corn" refers to corn that:
has been infested with insect pests.
is resistant to ECB.
has been infected with bacteria.
is not affected by pesticides.
27
Energy is brought into an ecosystem by which of the following?
cows and other herbivores
organisms that perform photosynthesis
carnivores
fungi and decomposers
28
In evolution some traits are neither selected for nor against.
true
false
29
The variable that is measured in an experiment is the __ variable.
independent
control
dependent
experimental
30
Biology is the study of
minerals.
life.
the weather.
energy.
31
What is the organization from smallest to largest?
cell, organ, tissue, organism
cell tissue, organ, system
cell, organ, system, tissue
tissue, system, cell, organ
