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24 Cards in this Set

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  • Back
study of life
biology
smallest unit that can perform all the life process
cell
the process by which organisms make more of their own kind
reproduction
sum of all chemical processes occurring in an organism
metabolism
the maintenance of stable internal conditions in spite of changes in the external environment
homeostasis
section of a chromosome that codes for a protein or RNA molecule
gene
transmission of genetic traits from parent to offspring
heredity
change in the DNA of a gene or chromosome
mutation
change in the genetic makeup of a population or species over time
evolution
group of organisms that look alike and are capable of producing fertile offspring in nature
species
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 study of the interactions of living organisms with one another and with their environment
ecology
human immunodeficiency virus; the infectious virus that causes AIDS
HIV
a disease characterized by abnormal cell growth
cancer
fatal genetic disorder in which excessive amounts of mucus are secreted, blocking intestinal and bronchial ducts and causing difficulty in breathing
cystic fibrosis
the act of noting or perceiving objects or events using the senses
observation
a proposed explanation for an observation that can be tested by additional observations or experimentation
hypothesis
expected outcome if hypothesis is correct
prediction
of the acidity of a solution, representing the hydrogen ion concentration
pH
a planned procedure to test a hypothesis
experiment
a group in an experiment that does not receive experimental treatment
control group
factor that is varied in an experiment
independent variable
variable that is measured in an experiment
dependent variable
explanation based on a set of related hypotheses that have been tested and confirmed many times
theory