| A | B |
| population | groups of individuals that belong to the same species and live in the same area |
| potential energy | the kind of energy that is stored in chemical bonds of food or ATP |
| predation | one species consumes the other |
| producers | organisms that can capture energy from the sunlight and use that energy to produce food |
| prokaryotic | cells without organelles |
| proteins | biomolecule which communicates with other cells, used as enzymes |
| Protista | kingdom consisting of eukaryotic unicellular heterotrophs or autotrophs |
| Punnet Square | model used to represent crosses between organisms allelles |
| recessive | the allele that is masked by another allele when 2 alleles are present |
| ribose | the sugar found in RNA |
| ribosome | proteins and RNA in cytoplasm which produce proteins |
| Schleiden,Schwann,Virchow | scientists who developed cell theory |
| scientific method | the organized w2ay that scientists solve problems |
| semi-permeable membrane | a membrane that allows some molecules to pass but blocks other molecules |
| sexual reproduction | reproduction with 2 parents |
| somatic cells | body cells; diploid cells |
| species | group of organisms that can breed and produce fertile offspring |
| stoma | openings on the bottoms of leaves through which gases enter or exit |
| substitution | mutation in which one base is changed |
| Sudan | test for the presence of lipids |
| symbiosis | 2 species living in a close long term relationship |
| taxonomy | science of classifying organisms and assigning each organism a name |
| tissue | a group of cells that are similar and work together |
| trait | characteristic of an organism |
| transcription | process in which DNA makes a near exact copy of itself mRNA |
| translation | process in which mRNA is read by the ribosome and makes a protein |
| trophic level | each step in a food chain or food web |
| true breeding plants | Mendel's term for homozygous plants |
| variable | factor being tested |
| Von Leeuwenhoek | first person to view living cells under a microscope |
| Watson, Crick | determined that DNA is a double helix |