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Cell Organelles
What are they and how are plant
and animal cells different?
Section 3.2
NUCLEUS
The Brain
Mitochondria
The Powerhouse of the Cell
More Numerous in Muscle cells
Large Central Vacuole
&
chloroplast
What two cell organelles were once
thought to be prokaryotic cells?
Mitochondria and chloroplasts!
They both are membrane bound
and contain their own circular DNA
Cell Membrane
Phospholipid
bilayer
• Selectively permeable
• Controls what enters and leaves the cell
Protein
channels
Ribosomes
most numerous organelle
Free in cytoplasm or attached on Rough ER
Involved in Protein Synthesis
Endoplasmic
Reticulum
Involved with
protein synthesis
Produces lipids
for cell
membrane
Golgi Apparatus
• Modifies,
secretes, and
stores
chemicals
• Processes
proteins
produced by
ribosomes
Lysosomes
Contains digestive
enzymes
Breaks down old
organelles
The Janitor of the Cell
Only found in animal cell
Plant Cells vs
Animal Cells
Rectangular shape
Circular shape
Cell wall
Lysosomes
Chloroplasts
Centrioles
Large central vacuole