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30 Cards in this Set
- Front
- Back
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Biology
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The study of life
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Cell
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Highly organized tiny structures with thin coverings called membranes
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Reproduction
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Process by which organisms make more of their own kind from one generation to the next
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Metabolism
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The sum of all the chemical reactions carried out in an organism
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Homeostasis
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The maintenance of stable internal conditions in spite of changes in the external environment
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Gene
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The basic unit of heredity
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Heredity
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The passing of traits from parent to offspring
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Mutation
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A change in DNA that damages genes.
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Evolution
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Change in the inherited characteristics of species over generations
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Species
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Group of genetically similar organisms that can produce fertile offspring
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Natural selection
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The process in which organism with favorable traits are more likely to survive and reproduce
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Ecology
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The branch of biology that studies the interactions of organisms with one another and with the non living part of their environment
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Genome
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The complete genetic material contained in an individual
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HIV
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A virus that attacks and destroys the human immune system
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Cancer
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A growth defect in cells a breakdown of the mechanism that controls cell division
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Cystic fibrosis
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Caused by an inherited defect gene, it's fatal disorder in which a thick, sticky mucus clogs passages in many of the body's organs
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Gene therapy
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The replacement of a defective gene with a normal version
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Observation
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The act of noting or perceiving objects or events using the senses
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Hypothesis
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Explanation that might be true, a statement that can be tested by additional observations or experimentation
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Prediction
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The expected outcome of a test, assuming the hypothesis is correct
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pH
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Scale of 0-14
Describes how acidic a solution is Solutions less than 7 are acidic Solutions at 7 are neutral Solutions above 7 are Base |
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Experiment
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A planned procedure to test a hypothesis
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Control group
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A group in an experiment that receives no experimental treatment
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Independent variable
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The factor that is changed in an experiment
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Dependent variable
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The variable that is measured in an experiment
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Theory
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A set of related hypotheses that have been tested and confirmed many times by many scientists.
Represents certainty by scientists* |
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What are the characteristics of life?
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Cellular structure= cells
Reproduction Metabolism=energy Homeostasis = stable internal environment Heredity=passed to offspring via genes ex cystic fibrosis Evolution=history of change |
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Parts of scientific method
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-collecting observations
-asking questions -forming hypotheses and making predictions -confirming predictions -drawing conclusions |
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Biotic
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Environmetal factor that is associated with activities of living organisms.
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Abiotic
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Environmetal factor that is not associated with activities of living organisms.
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