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24 Cards in this Set

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The change in the genetic makeup of a population or species over time
Evolution
The act of noting or perceiving objects or events using the senses
observation
A variable that is changed in an experiment
independent variable
The study of living organisms or the science of life
Biology
A disease characterized by abnormal cell growth
Cancer
A group of organisms that look alike and are capable of producing fertile offspring in nature.
species
The study of the interactions of living organisms with one another and with their environment
Ecology
The smallest unit that can perform all the life processes
cell
A proposed explanation for an observation that can be tested by additional observations or experimentation
hypothesis
The process by which organisms make more of their own kind
Reproduction
The expected outcome if a hypothesis is correct
prediction
A process by which populations change in response to their environment as individuals better adapted to the environment leave more offspring than those individuals not suited to the environment.
natural selection
The measure of the acidity of a solution, representing the hydrogen ion concentration.
PH
The sum of all chemical processes occurring in an organism
metabolism
A variable that is measured in an experiment.
dependent variable
The maintenance of stable internal conditions in spite of changes in the external environment
homeostasis
A planned procedure to test a hypothesis
experiment
Section of a chromosome that codes for a protein or RNA molecule
Gene
A group in an experiment that does not receive experimental treatment
control group
The transmission of genetic traits from parent to offspring
heredity
Human immunodeficiency virus
HIV
Change in the DNA of a gene or chromosome
Mutation
An explanation based on a set of related hypotheses that have been tested and confirmed many times
theory
A fatal genetic disorder in which excessive amounts of mucus are secreted, blocking intestinal and bronchial ducts and causing difficulty in breathing.
cystic fibrosis