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Jackson-SC-Ch3
Question | Answer |
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cell | the smallest functional and structural unit of all living organisms; |
cell membrane | a phospholipid layer that covers a cell’s surface and acts as a barrier between the inside of a cell and the cell’s environment |
organelle | one of the small bodies in a cell’s cytoplasm that are specialized to perform a specific function |
nucleus | in physical science, an atom's central region, which is made up of protons and neutrons |
prokaryote | a single-celled organism that does not have a nucleus or membrane-bound organelles |
eukaryote | an organism made up of cells that have a nucleus enclosed by a membrane |
cell wall | a rigid structure that surrounds the cell membrane and provides support to the cell |
ribosome | a cell organelle composed of RNA and protein; the site of protein synthesis |
endoplasmic reticulum | a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids |
mitochondrion | in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration, which produces ATP |
golgi complex | a cell organelle that helps make and package materials to be transported out of the cell |
vesicle | a small cavity or sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell |
lysosome | a cell organelle that contains digestive enzymes |
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 |
organism | a living thing; anything that can carry out life processes independently |
structure | the arrangement of parts in an organism |
function | the special, normal, or proper activity of an organ or part |