organelles - GEOCITIES.ws
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Transcript organelles - GEOCITIES.ws
ORGANELLES
Cell parts that carry
out specific life
functions within the
cell
NUCLEUS
Large oval structure
Acts as the “brain” of the
cell
Control center that directs
all of the cell’s activities
NUCLEOLUS
Small round structure
in nucleus
Makes ribosomes
CHROMATIN
Inside the nucleus
Thin strands of genetic
(inherited) material
Contains instructions for
ALL cell functions
NUCLEAR MEMBRANE
Surrounds nucleus
Controls what goes in and
out of the nucleus
Protects the nucleus
a.k.a. nuclear “envelope”
CYTOPLASM
Clear thick gel-like fluid
Holds organelles that carry
out life processes of the
cell
GOLGI BODIES
Look like flattened sacs
and tubes
Receive and package
proteins and other
materials for the cell
VACUOLES
Large round water filled sacs
Storage area
Very large in PLANT CELLS
Most plant cells have ONE large one
Some animal cells have many small
ones
Store food, water and wastes
MITOCHONDRIA
Rod or cigar shaped
“powerhouse” of the cell
Produce most of the energy
needed for cell functions
Muscle cells have lots of
these
ENDOPLASMIC RETICULUM
Looks like a maze of tubes
Carries proteins and other materials
around the cell
When ribosomes are near it … it is
called “rough”
Without ribosomes… it is called
“smooth”
RIBOSOMES
Some attach to the
endoplasmic reticulum
Some float free in the
cytoplasm
Small grain-like bodies
Make proteins
LYSOSOMES
Small round structures
Contain strong chemicals
that break down materials
Release substances that can
be used again
Has a double membrane
Cell’s clean up and recycling
crew
More common in animal cells
than plant cells
Called “suicide sacs”
CHLOROPLASTS
Only in PLANT CELLS
Large green structures
Capture sunlight and use
it to make food for the cell
CELL WALL
PLANT CELLS only
Rigid layer of non-living
material
Protects and supports the
cell
CELL MEMBRANE
Holds all the contents of the cell
Controls what goes into and out of the
cell