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15 Cards in this Set

  • Front
  • Back
cell
the basic unit of structure and function in living things.
microscopic
cells that can only be seen with a microscope.
organism
any living thing that maintains with life processes.
cell membrane
every cell surrounded by a thin covering
nucleus
the nucleus dierects all of a cell's activities including reproduction.
cytoplasm
a jellylike material that contains chemicals that help keep a cell healthy.
protist
a simple organism with a nucleus and organisms.
tissue
cells that work together to perform a certain function.
organ
several kinds of tissue working together for the same function.
organ system
organs that work together to do a job for the body.
digestive system
it breaks down into chemical nutrients that body cells need for energy, growth, and repair.
circulatory system
it is made up of the heart , the blood vessels, and the blood.
respiratory system
a group of organs and tissues that exchange oxygen and carbon dioxide between your body and the enviroment .
nervous system
enables you to sense your enviroment and react to it.
excretory system
when wastes are removed from the body.