Information about cell organelles and organization of life.

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Terms to Know
Definitions
cell membrane   flexible outer layer that seperates a cell from its environment - controls what enters and leaves the cell  
mitochondrion   the powerhouse of the cell, where respiration takes place  
rough endoplasmic reticulum   has ribosomes that produce necessary proteins for the cell  
smooth endoplasmic reticulum   acts as a pathway throughout the cytoplasm - lacks ribosomes  
nucleus   headquarters or control center of the cell - contains chromosomes made of DNA  
cytoplasm   gel-like material inside the cell - mostly water  
vacuole   storage bubble that holds food, water and wastes - small in animal cells, large in plant cells  
lysosome   suicide sacks - help dissolve harmful bacteria  
centrioles   aid in cell division - animal cells only  
cell wall   provide support and protection for a plant cell  
chloroplast   contain chlorophyll - traps sunlight to make food - plant cells only  


   

 
 

 
 

 

 

 
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