13.Class group of similar orders
14.cell wall strong supporting layer around the cell membrane in plants, algae, and some bacteria
15.cell cycle series of events that cells go through as they grow and divide
16.data evidence; information gathered from observations
17.differentiation process in which cells become specialized in structure and function
18.domain most inclusive taxonomic category; larger than a kingdom
19.DNA polymerase enzyme involved in DNA replication that joins individual nucleotides to produce a DNA molecule
20.Enzyme protein that acts as a biological catalyst