Biology Lab 1

If a pill bug travels 3 mm in 30 seconds, what is its rate of speed?

0.09 mm/s

What kind of animal is a pill bug?

A crustacean that lives on land.

What do scientists call the information they collect while doing experiments or making observations?

Data

What do scientists do first when they begin to study a specific topic?

Observation

All organisms are made of cells.

Scientific Theories

What is the Scientific Method?

Steps: Observe, Hypothesis, Experiment, & Conclusion

The data show that trans fat intake raises cholesterol and contributes to heart disease.

Conclusion

Which is made by a scientist following experiments and observations, a theory or a conclusion?

Conclusion

Developing a scientific theory.

An encompassing conclusion based on many individual conclusions in the same field.

If a pill bug moves toward a substance, is it attracted to or repelled by that substance?

Attracted

What kind of skeleton does a pill bug have?

Exoskeleton

What structures do pill bugs use for gas exchange, and what condition must these structures be in to function properly?

Gills for gas exchange & slightly moist

Making Obervations

Help scientists begin their study of a particular topic.

Formulating a Hypothesis

Helps scientists decide how an experiment will be conducted.

What is a tentative decision about the outcome of an experiment?

Hypothesis

If your hypothesis was that your pill bug would be attracted to applesauce and your pill bug moved toward the applesauce, what would you say about your hypothesis?

Hypothesis supported

What do we call the sample that lacks the factor being tested and goes through all the experimental steps?

Negative Control

Data

Results of their experiments.

Negative Control

Sample or event-that is not exposed to the testing procedure. If the negative control and the test sample produce the same results, either the procedure is flawed or the hypothesis is false.

What do scientists develop after many years of experimentation and a lot of similar individual conclusions?

Scientific theory

Testing the Hypothesis

Scientists make further observations or perform experiments in order to test the hypothesis.

Coming to a conclusion.

Whether their data support or do not support the hypothesis.