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## Unit 1 Exam Review ### Instructions Use your Unit 1 notes to complete this review to help prepare for the exam. You will turn in your completed review and filled in notes before the exam. 1. Know how to read and interpret a line graph, a bar graph, and a pie graph. * What axis do you find the i...

## Unit 1 Exam Review ### Instructions Use your Unit 1 notes to complete this review to help prepare for the exam. You will turn in your completed review and filled in notes before the exam. 1. Know how to read and interpret a line graph, a bar graph, and a pie graph. * What axis do you find the independent variable? **X-axis** * What axis do you find the dependent variables? **Y-axis** 2. Be able to identify the independent variable, dependent variable, the constants, and the control group from a controlled experiment. You will have to identify these concepts when given an experiment’s scenario. 3. A hypothesis must be **testable**. A hypothesis becomes a **theory** when it is tested and confirmed by many scientists. 4. Define the following terms: * **Independent/Manipulated Variable** - factor that scientists purposely change * **Dependent/Responding Variable** - factor that may change (the one being measured) because of the independent variable. * **Constants** - factors that stay the same * **Control Group** - standard of comparison (most natural conditions) 5. List the 8 characteristics of life. Be able to identify whether something is living, dead or non-living. 1. made of cells 2. can reproduce 3. based on a genetic code (DNA/RNA) 4. grow and develop 5. obtain and use materials and energy 6. respond to the environment 7. maintain internal balance (homeostasis) 8. evolution - change over time 6. Define **homeostasis** - process by which organisms maintain a relatively stable internal balance (environment).