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Biology essentials

Inference An assumption based on prior experience and evidence
Observation A statement about something based on direct information gathered from your senses.
Hypothesis A tentative, testable explanation to a scientific question
Null hypothesis A hypothesis of no difference or no effect.
Independent variable A variable that stands alone in a controlled experiment and is usually set by the experimenter.
Dependent variable A variable that responds to the independent variable. It is measured during the investigation.
Controlled variable (constant) Factors that are kept the same or controlled during an experiment
Experimental group In a controlled experiment, the group(s) exposed to the independent variable being tested and results are recorded.
Control group In a controlled experiment, the group that does not receive the treatment and is used as a benchmark for comparison.
Homeostasis The ability of an organism or cell to maintain stability or balance even when dealing with external changes.
Metabolism The sum of all chemical reactions that occur within the body of living organisms or cells
Quantitative data Information that can be measured and written down with numbers
Qualitative data Information that is not in numerical form and is often descriptive
Assumption Feature about your investigation that is accepted as true without proof.
Prediction A statement of what might happen. Hypotheses can lead to predictions
Organism Anything that has or had all of the characteristics of life
Created by: PRO Teacher jhaase