Intro to Biology Quiz

Researchers performing a well designed experiment should base their conclusions on

• the hypothesis      
• data from repeated trials of the experiment
• a small sample size to insure a reliable outcome
• results predicted before performing the experiment

Tags

NGSS.MS-LS2-4

Students in a Biology class thought that salt water would affect the movement of planaria. They put 25   planaria in salt water and recorded their observations. Which flaw was sent in the design of their   experiment?

• There was no hypothesis
• There was no control
• The sample was too big    
• The procedure was too complicated

A student’s experiment showed that earthworms moved away from light. This statement should be   classified as

• an inference
• a hypothesis
• a prediction
• a conclusion

Biology is the scientific study of

• the land, water, and air on Earth
• animals
• life
• the universe

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Variable in an experiment that the scientists observes for change or reaction (responding)

• Independent variable
• dependent variable

A group or subject in an experiment in which all variables are kept the same so others are measured against it (comparison)

• adaptation
• manipulated variable
• control group
• experimental group

A testable statement that relies on information gathered from observation and inference.

• theory
• hypothesis
• experiment
• analysis

A well supported explanation that is based on repeated experimentation, but not proven.

• theory
• hypothesis
• inferences
• law

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-2

A systematic way to examine the natural world.

• Education
• Science
• Knowledge
• Quantitative

Tags

NGSS.MS-PS1-2

Why do scientists use the scientific method?

• To make sure they get credit for their discoveries.
• To make sure their results are valid and can be performed by other scientists.
• So that other scientist don't get mad at them