Cell Organelles

What are they and how are plant and animal cells different?

Section 3.2

NUCLEUS

The Brain

MitochondriaThe Powerhouse of the Cell

More Numerous in Muscle cells

Large Central Vacuole &

chloroplast

What two cell organelles were What two cell organelles were once thought to be prokaryotic once thought to be prokaryotic

cells?cells?

Mitochondria and Mitochondria and chloroplasts!chloroplasts!

They both are membrane They both are membrane bound and contain their own bound and contain their own

circular DNAcircular DNA

Cell Membrane

• Selectively permeable• Controls what enters and leaves the cell

Phospholipid bilayer

Protein channels

Ribosomes most numerous

organelle

Free in cytoplasm or attached on Rough ER

Involved in Protein Synthesis

Endoplasmic Endoplasmic ReticulumReticulum

Involved with protein synthesis

Produces lipids for cell membrane

Golgi Apparatus

• Modifies, secretes, and stores chemicals

• Processes proteins produced by ribosomes

LysosomesContains digestive

enzymesBreaks down old

organelles

The Janitor of the CellOnly found in animal cells!

Plant CellsPlant Cells vsvs Animal CellsAnimal CellsRectangular shape

Cell wall

Chloroplasts

Large central vacuole

Circular shape

Lysosomes

Centrioles