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4.1 and 4.2 Bio

TermDefinition
cell in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm
cell theory the theory that states that all living things are made up of cells, that cells are the basic units of organisms, that each cell in a multicellular organism has a specific job, and that cells come only from existing cells
plasma membrane a phospholipid layer that covers the cells surface and acts ass a barrier between the inside of the cell and its wall
cytoplasm the region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus
cytosol the soluble portion of the cytoplasm, which includes molecules and small particles, such as ribosomes, but not the organelles covered with membranes
nucleus in a eukaryotic cell, a membrane-bound organelle that contains he cell's DNA and that has a role in processes such as growth, metabolism, and reproduction
organelle 1 of the small bodies that are found in e cytoplasm of a cell and that are specialized to perform a specific function
prokaryote a single-celled organism that does not have a nucleus or membrane-bound organelles; examples are archaea and bacteria
eukaryote an organism made up of cells that have a nucleus enclosed by a membrane, multiple chromosomes, and a mitotic cycle; eukaryotes include protists, animals, plants, and fungi but not archaea or bacteria
tissue a group of similar cells that perform a common function
organ a collection of tissues that carry out a specialized function of the body
organ system a group of organs that work together to perform body functions
Created by: ChambersA20
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