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3rd Quarter Review

QuestionAnswer
Chapter 1
1. What is Homeostasis? The maintenance of a stable level of internal conditions are constantly changing
2. Starting with atoms list the levels of organization up to an organism Atom -> Biological molecule -> organelle -> cell -> tissue -> organ -> system
3. List and explain the steps of scientific method Observing and Hypothesizing - Biologists make observations and create a hypothesis to predict what might happen
Experimenting - Scientists experiment to test the hypothesis to conclude if it was correct or incorrect Control Group - The part of an experiment that is standard against which results are compared
Experimental Group The test group that receives experimental treatments
Designing an experiment
Independent variable The condition in an experiment that is tested
Dependent variable The condition in the experiment that depends on changes made to the independent variable
Using tools To carry out investigations, scientists need tools that enable them to record information
Maintaining safety Safety is another important factor that scientists consider when carrying out investigations. Biologists try to minimize hazards to themselves, the people working around them, and the organisms they are studying
safety symbol a symbol that warns you about a danger that may exist from chemicals, electricity, heat, or procedures you will use
Data gathering To answer their questions about scientific problems, scientists seek information from their investigators
Thinking about what happened Often, the thinking that goes into analyzing data takes the greatest amount of a scientist's time and careful review of the experiment
Reporting results Results and conclusions of investigations are reported in scientific journals
Results of an investigation Results are published
Other scientists attempt to repeat procedure - verify results
Chemistry
1. What is covalent bond? A chemical bond formed between atoms by the sharing of electrons
2. What are enzymes? Proteins that change the rate of a chemical reaction
3. Define the terms reduced and oxidized reduced - to change in size or number oxidized -
Created by: Natalie Wibert
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