Biology Exam

Science is best described as a

• set of facts

• way of knowing

• collection of beliefs

• list of rules

The work of scientists usually begins with

• testing a hypothesis

• careful observation

• creating experiments

• drawing conclusion

The work of scientists usually begins with

• testing a hypothesis

• careful observations

• creating experiments

• drawing conclusion

Information gathered from observing a plant grow 3 cm over a two-week period is called

• inferences

• variables

• hypotheses

• data

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A scientific hypothesis

• can be based on personal beliefs or opinions

• can be tested by experiments or observations

• does not have to be tested to be accepted as correct

• is a proven fact with much evidence to support it

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Suppose that a scientist proposes a hypothesis about how a newly discovered virus affects humans. Other virus researchers would likely

• reject the hypothesis right away

• change the hypothesis to fit their own findings

• design new experiments to test the proposed hypothesis

• assume that the hypothesis is true for all viruses

Suppose that a scientific idea is well-tested and can be used to make predictions in numerous new situations, but cannot explain one particular event. This idea is a

• hypothesis that is incorrect

• hypothesis that must be retested

• theory that should be discarded

• theory that may need revision

A theory

• is always true

• is the opening statement of an experiment

• may be revised or replaced

• is a problem to be solved

Which of the following is NOT a characteristic of all living things?

• growth and development

• ability to move

• response to the environment

• ability to reproduce

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Cells in multicellular organisms have many different sizes and shapes. These differences in cells is called cell specialization. Cell specialization allows cells to

• reproduce

• perform different funtions

• respond to their environment

• be less complex

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