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BIOLOGY 9/20/17


Atom basic units of matter
Electron negative charged particles
Element substance consisting entirely of one type of atom
Compound Substance formed by the chemical combination of two or more elements in definite proportions
Ionic bond bond formed when one or more electrons are transferred from one atom to another
Covalent bond bond formed by sharing of electrons between atoms
Cohesion attraction between molecules of the same substance
Adhesion attraction between molecules of different substances in plants interactions between unlike molecules
Mixture material composed of two or more elements or compounds that are physically mixed together but not chemically combined
Solution mixture of 2 or more substances in which the molecules of the substances are evenly distributed
Acid compound that forms hydrogen ions (H+) in solution
Base compound that produces hydroxide ions (OH+) in solution
Buffer weak acid or base that can react with strong acids or bases to help prevent sharp sudden changes in pH
Monomer small unit that can join together with other small units to form polymers
Polymers large compound formed from combination of many monomers
Carbohydrates compound made up of carbon hydrogen and oxygen atoms major source of energy for the human body
Lipid macromolecule made mainly from carbon & hydrogen atoms includes fats oils and waxes
Nucleic acid macromolecule containing hydrogen oxygen nitrogen carbon & phophorus
RNA single stranded nucleic acid that contains the sugar of ribosomes
Protein macromolecule that contains carbon hydrogen oxygen & nitrogen need by the body for growth and repair & to make up enzymes
Amino acid compound with amino group on one end & a carboxyl group of the other end
Catalyst substance that speeds up the rate of a chemical reaction
Enzyme protein that acts as a biological catalyst
Substance Reactant of an enzyme catalyzed reaction