a testable possible explanation of an observation

Scientists usually design experiments

with a good idea of expected results due to prior research

The word theory used in a scientific sense means

a highly tested, generally accepted principle.

maintaining internal equilibrium

a group of organisms that belong to the same species.

Scientists usually design experiments

with a good idea of the expected experimental results

One way to describe illness is

the inability to maintain homeostasis.

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Scientific Method, Characteristics of Life, & Themes in Biology

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Questions 31

Answers

1
A hypothesis is
A proven statement
A concluding statement
a testable possible explanation of an observation
a definite answer to a given problem.
2
Scientists usually design experiments
based on wild guesses.
with a good idea of expected results due to prior research
once they know the answer
in order to develop new laboratory tools.
3
A scientist noticed that in acidic pond water some salamanders developed with curved spines.
That is a hypothesis
that is a theory
that is an observation
that is a control
4
An educated guess is also referred to as?
Hypothesis
Observation
Experiment
Theory
5
The word theory used in a scientific sense means
a highly tested, generally accepted principle.
an absolute scientific certainty.
a guess made with very little knowledge to support it.
6
The picture is an example of
qualitative data
none of these
graph
quantitative data
7
Which of the following is a characteristic of all living things?
Cellular Organization
Ability to speak
Movement
Photosynthesis
8
Living things
are composed of cells
all of the above
have the ability to reproduce
need energy for life processes
9
Scientists share their research results by
through peer review
publishing in scientific journals
all of these
presenting at scientific meetings
10
The dependent variable responds to the independent variable
False
True
11
All living things are made up of at least a small group of cells.
False
True
12
All living things maintain a balance within their cells and the environment through
evolution
development
homeostasis
growth
13
Homeostasis means
A change over long periods of time
maintaining internal equilibrium
The same as evolution or adaption
Rapid internal change
14
A hypothesis that does not explain an observation
is rejected
can be accepted if certain conditions are met
is known as an inaccurate forecast and can be accepted
often predicts a different observation.
15
Biodiversity is greatest on the planet
near the tropic of capricorn.
at the equator.
by the tropic of cancer.
near the poles.
16
Scientific hypotheses are most often tested by the process of
analyzing large sets data
experimenting
inferring
communicating with other scientists
17
A population
a group of organisms that belong to the same species.
is a group of organisms from different species interacting.
includes only one organim
none of these
18
The picture reprents
A data table
quantitative data
2 of these are correct
A graph
19
Scientists usually design experiments
based on wild guesses
in order to develop new laboratory procedures
all of the above
with a good idea of the expected experimental results
20
which is the manipulated variable in an experiment?
constants
Control Group
Independent variable
Dependent variable
21
What is quantitative data?
a color
a model
a description
numerical
22
The two groups necessary in an experiment are
qualitative and quantitative
dependent and independent
manipulated and responding
control and experimental
23
Unity refers to
the fact that we all have genetic information
All of these
the fact that all living things have DNA
the fact that we have one common universal ancestor
24
One way to describe illness is
the inability to process food.
the inability to maintain focus.
the inability to maintain homeostasis.
the inability to maintain eye contact.
25
All organisms are composed of
Cells
Diatoms
None of the above
Cellulose
26
The smallest units that can carry on all the functions of life are called
Molecules
Cells
Species
Organelles
27
Which of the following is not necessarily a characteristic of living things?
Complexity
Homeostasis
Metabolism
Reproduction
28
Which is the variable being observed or measured in an experiment?
Manipulated variable
Independent variable
Dependent variable
Control
29
The ecosystem is the level of organization
that includes living and nonliving factors
that includes biotic and abiotic factors
that includes a biom
Two of these are correct
30
A unifying explanation for a broad range of observations is a
prediction
hypothesis
theory
controlled experiment
31
The chair is red.
Is an inference.
Is an observation.

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