Cell Structures and Function
Organelles
Structures in a cell that perform specific functions like organs in the body that perform function to keep the whole body alive
Eukaryote vs. Prokaryote
• Eukaryotes have a nucleus
–Animal Cells
–Plant Cells
• Prokaryotes don’t have a nucleus–Bacteria
Section 7-2
Figure 7-5 Plant and Animal Cells
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Plant or Animal Cell
Nucleus
Nucleolus
Cell Membrane
Cytoplasm
Eukaryotic Cell Organelles and Function
1. Nucleus Nickname: “The Control Center” Function: holds the DNA
Section 7-2
Figure 7-5 Plant and Animal Cells
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Plant or Animal or Bacteria Cell
Nucleus
Nucleolus Ribosomes
Cell Membrane
Cytoplasm
Eukaryotic Cell Organelles and Function
2. Ribosomes Function: makes proteins Found in all cells, prokaryotic and
eukaryotic
Eukaryotic Cell Organelles and Function
3. Endoplasmic Reticulum (ER) Nickname: “Roads” Function: The internal delivery
system of the cell
Section 7-2
Figure 7-5 Plant and Animal Cells
Go to Section:
Plant or Animal Cell
Nucleus
Nucleolus
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Cell Membrane
Cytoplasm
Ribosomes
Endoplasmic Reticulum 2 Types:
1. Rough ER: Rough appearance because it has
ribosomes Function: helps make proteins, that’s
why it has ribosomes
2. Smooth ER: NO ribosomes Function: makes fats or lipids
Section 7-2
Figure 7-5 Plant and Animal Cells
Go to Section:
Plant or Animal Cell
Nucleus
Nucleolus
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Ribosomes
Golgi Complex
Cell Membrane
Cytoplasm
Eukaryotic Cell Organelles and Function
4. Golgi Complex Nickname: The shippers Function: packages, modifies, and
transports materials to different location inside/outside of the cell
Appearance: stack of pancakes
Section 7-2
Figure 7-5 Plant and Animal Cells
Go to Section:
Plant or Animal Cell
Nucleus
Nucleolus
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Ribosomes
Golgi Bodies
Cell Membrane
Cytoplasm
Lysosome
Eukaryotic Cell Organelles and Function
5. Lysosomes: circular, but bigger than ribosomes)
Nickname: “Trash man” Function: eat the garbage like old
food and old cells
Section 7-2
Figure 7-5 Plant and Animal CellsPlant or Animal Cell
Nucleus
Nucleolus
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Ribosomes
Golgi Bodies
Mitochondria
Cell Membrane
Cytoplasm
Eukaryotic Cell Organelles and Function
6. Mitochondria Nickname: “The Powerhouse” Function: Energy formation
Breaks sugar to make ATP ATP: is the major fuel for all cell
activities that require energy
Section 7-2
Figure 7-5 Plant and Animal Cells
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Animal or Plant Cell
Cell Membrane
Vacuole
Eukaryotic Cell Organelles and Function
7. Vacuoles Function: stores water
This is what makes lettuce crisp When there is no water, the plant wilts
Animal Cell
Nucleus
Nucleolus
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Ribosomes
Golgi Bodies
Mitochondria
Cell Membrane
Cytoplasm
Now let’s talk about structures only found in PLANT Cells!!
Section 7-2
Figure 7-5 Plant and Animal Cells
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Plant Cell Only
Cell Membrane
Vacuole
Chloroplasts
Eukaryotic Cell Organelles and Function
8. Chloroplasts Function: traps energy from the sun
to produce food for the plant cell Green in color because of
chlorophyll, which is a green pigment
Chloroplasts
Section 7-2
Figure 7-5 Plant and Animal Cells
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Plant Cell Only
Cell Membrane
Vacuole
Chloroplasts
Cell Wall
Eukaryotic Cell Organelles and Function
9. Cell Wall Function: provides support and
protection to the cell membrane Found outside the cell membrane in
plant cells
Plant Cell
Cell Membrane
Vacuole
Chloroplasts
Cell Wall
Nucleolus
Nucleus
Rough ER
Smooth ER
Golgi Bodies
Mitochondria
Ribosomes
Cytoplasm
Comparing Plant and Animal CellsPlant Animal