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| The scientific study of living organisms and their interactions with the environment |
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| In biology, the smallest unit that can perform all life processes; cells are covered by a membrane and have a nucleus and cytoplasm |
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| The process of producing offspring |
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| The sum of all of the chemical reactions carried out in an organism |
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| The maintenance of stable internal conditions in spite of changes in the external environment |
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| The basic unit of heredity |
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| The passing of traits from parent to offspring |
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| A change in the DNA of a gene |
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| Change in the inherited characteristics of species over generations |
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| A group of genetically similar organisms that can produce fertile offspring |
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| The process in which organisms with favorable traits are more likely to survive and reproduce |
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| The branch of biology that studies the interactions of organisms with one another and with the nonliving part of their environment. |
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| The complete genetic material contained in an individual |
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| Human immunodeficiency virus; causes AIDS |
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| A growth defect in cells, a breakdown of the mechanism that controls cell division |
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| A fatal disorder in which a thick, sticky mucus clogs passages in many of the body's organs |
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| The replacement of a defective gene with a normal version |
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| The act of noting or perceiving objects or events using the senses |
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| An explanation that might be true-a statement that can be tested by additional observations or experimentation |
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| The expected outcome of a test, assuming the hypothesis is correct |
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| A relative measure of the hydrogen ion concentration within a solution |
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| A planned procedure to test a hypothesis |
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| A group in an experiment that receives no experimental treatment |
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| The factor that is changed in an experiment |
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| The variable measured in an experiment |
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| A set of related hypotheses that have been tested and confirmed many times by many scientists |
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