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a combination of two or more tissues that work together to perform a specific function in the body
a group of individuals of the same species that live together in the same area at the same time
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
membrane-covered organelle found in eukaryotic cells that contains a cell's DNA and serves as a control center for the cell
describes a cell that does not have a nucleus or any other membrane-covered organelles; also called bacteria
a structure that surrounds the cell membrane of some cells and provides strength and support to the cell membrane
a membrane-covered cell organelle that produces lipids, breaks down drugs and other substances, and packages proteins for delivery out of the cell
a membrane-covered compartment in a eukaryotic cell that forms when part of the cell membrane surrounds an object and pinches off
a large membrane-covered structure found in plant cells that serve as storage containers for water and other liquids
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