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Cell membrane
-selectively permeable
-controls what enters and leaves the cell
-both pro and euk
Cytoplasm
jelly like substance that keeps organelles floating within the cell

both pro and euk
Cytoskeleton
-helps cell maintain and hcange shape
-made of proteins
-"scaffolding-like structure" in cytoplasm
Chromatin
Chromosomes before it coils up (imagine hair ball)
Vesicles
small sac that transports substances in cells
ER: rough and smooth
transports proteins and other substances
Golgi Appar. 

enzymes in golgi modify proteins
packaging and distribution center of the cell. flattened sacs. packages protein
Lysosome
contain digestive enzymes. small and spherical. vesicles that dont transport proteins outside the cell remain in the cell and become lysosomes.
Nucleus and nuclear membrane
Nucleus: internal compartment that houses the cell's DNA. control center. only in euk.
Nucleolus
-makes rRNA 
-located in nucleus
Flagella
Long threadlike structures that propel the cell (movement) 

also moves substances across the cell's surface
Cilia
Short hair-like structures used for movement
Central vacuoles
found only in plant cells
-storage spaces for food, water and waste.
-very large
-keeps plant from withering - maintains turgor pressure
Chloroplasts
sites of photosynthesis

contains thylakoids than contain chlorophyll which absorb red and blue light and reflect green light. 
Ribosomes
Sites of protein synthesis
Mitochondria
sites of cellular respiration - produces ATP
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