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1stQuarterExamVocab

Seminole County Fl Biology

TermDefinition
cell theory all living things are made of cells, cells are the basic unit of life, cells come from preexisting cells
lysosomes acts as the garbage disposal, using enzymes to break down wastes in the cell
facilitated diffusion movement across the plasma membrane from an area of higher concentration to an area of lower concentration with the help of a carrier molecule, energy is not required
inference a logical interpretation based on prior knowledge and experience
semi-permeable allows some substances to pass across it while others cannot (cell membrane)
eukaryotic organism whose cells contain a nucleus
prokaryotic unicellular organism that lacks a nucleus
mitochondria converts energy stored in food into compounds that the cell can use
protein macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair
macromolecules carbohydrates, lipids, proteins, nucleic acids
activation energy energy that is needed for a reaction to begin
enzymes protein catalyst that speeds up the rate of specific reactions
optimum pH the best pH value, the point where the enzyme is most active
adhesion water molecules being attracted, or ''stick'', to other substances
cohesion water molecules being attracted, or "stick", to each other
capillary action tendency of water to rise in a thin tube, due to cohesion and adhesion
theory well tested explanation that unifies a broad range of observations and hypotheses, enabling scientist to make accurate predictions about new situations
Created by: crystalhawes