Ball State University Biology 102 Exam 1 | Questions And Answers Latest {2024- 2025} A+
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What is biology? - Biology is the scientific study of life.
All living organisms are composed of - cells
All cells use ___________ as the chemical material of _____________, the units of heredity. - DNA
Genes
All cells require _______________ and a source of building materials _______________ for growth,
maintenance and repair. - Energy
Matter
Other characteristics of living organisms - 1. Order/Organization
2. Regulation
3. Growth and development
4. Response to the environment
5. Reproduction
6. Evolution.
What is science? - Science is both a body of knowledge and a pathway by which we can come to
discover and better understand the world around us.
Science seeks _____________ causes for ______________ phenomena. - Natural
Natural
This limits the scope of science to the study of structures and processes that we can
_________________ and __________________. - Observe
Measure
, The scientific method - Step 1: Make observations.
Step 2: Formulate a hypothesis.
Step 3: Devise a testable prediction.
Step 4: Conduct a critical experiment.
Step 5: Draw conclusions and make revisions.
A __________________________is a proposed explanation of observed phenomena. It is an explanation
that can be put on trial. - Hypothesis
The _______________________ variable is the one that is being suggested as a "cause"; you can
manipulate this in your experiment; [x-axis on graph]. - Independent
The ______________________ variable is the one where the "effect" can be seen; changes that occur in
this variable are caused by the changes to the other variable; [y-axis on graph]. - Dependent
If the hypothesis is "true", then we should be able to use it to accurately __________________ what will
happen to the dependent variable if we manipulate the independent variable. - Predict
This prediction is tested by performing an ____________________ where we manipulate the
independent variable to see if the dependent variable responds as we had predicted. - Experiment
An experiment is designed to compare an experimental group with a __________________ group. -
Control
Experiments must include _____________________. You must have more than one subject in both the
control group and the experimental group. - Replication
When designing an experiment, you must decide what ______________ you must collect. - Data
If the results of the experiment match the predictions, we say that the hypothesis is
__________________. - Supported
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