Cell Theory  All organisms are made up of one or more cells.  Cells are the basic units of structure and function in all organisms.  All cells come from cells that already exist.

organelle  structures in the cytoplasm that break down food, move wastes, and store materials, create materials  RWA The different parts that make something up

cell/plasma membrane  forms the outer boundary of the cell  allows only certain materials to move in and out of the cell  RWA Security guard or fence

cytoplasm  the gel-like material inside the cell membrane and outside the nucleus  organelles function within the cytoplasm  RWA Water in the ocean that lets aquatic life do its work, boundaries of a sports field that lets athletes play a sport

mitochondria  The “powerhouse” of the cell, breaks down food molecules to make energy for the cell  RWA Power plant that converts one form of energy into electricity

Nuclear Envelope Allows RNA and ribosomes to exit and enter Keeps other organelles out RWA – Security guard or fence

nucleus  a structure that directs all activities of the cell  RWA coach, boss, movie director

Nucleolus  found in the nucleus  contains RNA  makes ribosomes

chromatin  hereditary material (DNA) found in the nucleus  Carries instructions for cell/organism  RWA Recipe book, plans to build something

endoplasmic reticulum a folded membrane “highways” that transport ribosomes two types  smooth  rough covered with ribosomes RWA  Hiking trail, street, highway

Golgi bodies  an organelle that packages (wraps in a membrane) and tags chemical compounds RWA  Post office

lysosome  an organelle that breaks down wastes and worn out cell parts and recycles them RWA  wrecking crew

ribosome  synthesizes proteins Uses codes (RNA) from the nucleus to synthesize or make proteins RWA  Factory, construction worker

Cytoskeleton  An organized network of protein filaments that: helps things move around in the cell allows muscles to contract maintains cell shape  RWA Any supporting framework

vesicle  Deliver compounds throughout the cell RWA  “Tim the UPS man”

mitosis  A cell division that produces two new cells that are identical to the original cell  Happens for growth and development and repair of old or damaged cells