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Chap. 2 Science Voc.

TermDefinition
Organism living things
Cell the basic unit of structure and function in an organism
Unicellular single celled organism
Multicellular organisms composed of many cells
Stimulus a change in a organism's surrounding that cause the organism to react
Response an act or change in behavior
Development the process of change that occurs during an organism's life to produce a more complex organism
Spontaneous Generation the mistaken idea that living things can arise from nonliving sources
Autotroph organisms that make their own food
Heterotroph organisms that can not make their own food
Homeostasis the maintenance of the stable internal conditions
Classification the process of grouping things based on their similarities
Taxonomy the scientific study of how living things are classified
Binomial Nomenclature a naming system called Linnaeus
Genus a classification grouping that contains similar, closely related organisms
Species a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce
Prokaryote are organisms whose cells lack a nucleus
Nucleus a dense area that contains nucleus acids
Eukaryote members of the domain Eukarya live in this domain
Microscope an instrument that makes small objects look large
Cell Theory a widely accepted explanation of the relationship between cells and living things
Organelle the cell structures, that carry out specific functions within the cell
Cell Wall a rigid layer of nonliving materials that surround the cell of plants and some organisms
Cell Membrane the barrier after the cell wall
Cytoplasm the region between the cell membrane and nucleus
Mitochondria suddenly, rod-shaped structures loom ahead
Endoplasmic Reticulum a maze of passageways past the cytoplasm
Ribosome grain like bodies attached to the endoplasmic reticulum
Golgi Body looks like flat sacs and tubes, can be tought of as the mail room
Chloroplast only plants have these green organelles
Vacuole are past the chloroplast and is a large filled sac
Lyosome are around the vacuole and are small round structures containing chemicals that break down certain materials in the cell
Created by: s730652
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