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32 Cards in this Set

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Compound
substance that is made up of more than one kind of atom
Ionic Bond
Chemical bond joining positive and negative ions
Polar Molecule
a molecule, such as water, that has positvely and negatively charged ends
Molecule
smallest particle of a substance that retains all the properties of the substance and is composed of two or more atoms bonded by the sharing of electrons
electrons
elementary particle with negative elecric charge
Base
Compound that is a proton acceptor
Ions
electrically charged atoms or molecules
Element
substance composed of a single type of atom
Acid
compound that is a proton donor
Hypothesis
proposed explanation
Acid Rain
precipitation with below normal pH, often the result of industrial pollution and automobile exhaust
Prediction
the expected outcome if hypothesis is accurate
cell membrane
bilipid layer that encloses the cytoplasm, essential to the cell's cytoplasm: also called teh plasma membrane
Nucleus
The organelle that houses the DNA of eukaryotic cells
Organelles
subcellular structure that has a special function
Atom
smallest unit of matter that cannot be broken down by chemical means
Cell Theory
principle that states all organisms are made of one or more cells that are derived from other cells
Cystic fibrosis
genetic disorder in which excessive amounts of mucus are secreted, blocking intestinal and bronchial ducts and causing difficulty in breathing
Eukaryotic
complex cell that has nucleus enclosed by a membrane
Ribosomes
cytoplasmic organelle on which proteins are synthesized
prokaryotic
a cell without a nucleus
Cytoplasm
the material between the cell membrane and the nuclear membrane
Metabolism
sum of all chemical processes occurring in an organism
Heredity
transmission of genetic traits from parent to offspring
Cancer
a disease characterized by abnormal cell growth
HIV
Human Immunodeficiency virus that causes AIDS
Homeostasis
maintenance of the internal stability of a cell, organism, or population in is environment
Biology
science of life
Cell
smallest unit that can perform all the life processes
Control
factor that is held constant throughout an experiment to test a hypotheseis
Theory
explanation bases on a hypothesis that has been tested many times
Experiment
test of a hypothesis in which data are gathered under controlled conditions