Organelle Review

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Organelle Review
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Nucleus
Nucleus

• Contains nucleolus DNA.
• DNA (genetic material) controls cell processes
  which is why nucleus is sometimes referred to as
  cell control center

Nucleolus
DNA
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Nuclear envelope

• Membrane surrounding / protecting nucleus. Has
  pores (holes) to allow certain molecules to
  leave/enter.

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Nucleolus

• Makes Ribosomes

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Mitochondria

• Transforms food molecules into energy for cell

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Golgi Apparatus

• Receives, modifies packages newly made proteins

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Vacuole (animal)

• Stores food waste molecules
• Many small

Waste Vacuole
Food Vacuole
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Vacuole (plant)

• Stores Water
• One large

vacuole
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Plasma (Cell) Membrane
outside
membrane
inside

• Barrier of the cell that is semi (or selectively)
  permeable
• Regulates what goes in/out of cell

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Cell Wall

• Present in plant cells, bacteria, algae fungi)
• Rigid barrier outside of the plasma membrane
  (made of carbs cellulose or chitin)

Membrane
Cell Wall
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Chloroplast

• Uses light energy to make food molecules by
  photosynthesis
• In plant cells and some algae bacteria

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Ribosome
Becomes a protein

• Assembles (makes) proteins

tRNA
mRNA
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Rough Endoplasmic Reticulum

• Has ribosomes (thats why its rough)
• Packages proteins in pieces of its own membrane

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Smooth Endoplasmic Reticulum

• No ribosomes
• Makes lipids, breaks down toxins, stores calcium
  in muscle cells

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Lysosome

• Contains enzymes that break down molecules

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Centrioles

• Assemble protein fibers needed during cell
  division (found in animal cells)

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Cytoskeleton

• Network of protein fibers that give cell
  structure helps cells move.