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You are watching: A group of similar cells organized into a functional unit is called

NSES Content Standard CLife Science: Structure and function in living systemsGrades 5-8, page 156Specialized cells perform specialized functions in multicellular organisms.Groups of specialized cells cooperate to form a tissue, such as a muscle.Different tissues are in turn grouped together to form larger functionalunits, called organs. Each type of cell, tissue, and organ has a distinctstructure and set of functions that serve the organism as a whole.
�Benchmark 5C The Living Environment:CellsGrades 3-5, page 111Microscopes make it possible to see that living things are made mostlyof cells. Some organisms are made of a collection of similar cells thatbenefit from cooperating. Some organisms" cells vary greatly in appearanceand perform very different roles in the organism.Benchmark 5C The Living Environment:CellsGrades 6-8, page 112All living things are composed of cells, from just one to many millions,whose details usually are visible only through a microscope. Differentbody tissues and organs are made up of different kinds of cells. The cellsin similar tissues and organs in other animals are similar to those inhuman beings but differ somewhat from cells found in plants.Benchmark 5C The Living Environment:CellsGrades 6-8, page 112Cells continually divide to make more cells for growth and repair.Various organs and tissues function to serve the needs of cells for food,air, and waste removal.Benchmark 5C The Living Environment:CellsGrades 6-8, page 112Within cells, many of the basic functions of organisms--such as extractingenergy from food and getting rid of waste--are carried out.

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The way inwhich cells function is similar in all living organisms.Benchmark 5C
The Living Environment:CellsGrades 9-12, page 113Within the cell are specialized parts for the transport of materials,energy capture and release, protein building, waste disposal, informationfeedback, and even movement. In addition to these basic cellular functionscommon to all cells, most cells in multicellular organisms perform somespecial functions that others do not.Benchmark 6C The Human Organism: BasicFunctionsGrades 6-8, page 137Organs and organ systems are composed of cells and help to provideall cells with basic needs.