2. Compare & contrast viruses with living organisms.
7.1 – Prokaryotic & Eukaryotic Cells
State Standard
SB1a
Explain the role of cell organelles for both prokaryotic & eukaryotic cells, including the cell membrane, in maintaining homeostasis & cell reproduction.
SB3d
Compare & contrast viruses with living organisms.

3. Origin of the name: pro- = before Karyon = nucleus Prokaryotic Cells
Chapter 7
Cellular Structure and Function
7.1 Prokaryotic & Eukaryotic Cells
Prokaryotic Cells
Origin of the name:
pro- = before
Karyon = nucleus
Thought to be the first cells on earth, before any cells with a nucleus.
Prokaryotes lack a nucleus.
Memorization Tip: “Pro-No” because there is no nucleus.

4. Smaller compared to other cells Simple structure
Chapter 7
Cellular Structure and Function
7.1 Prokaryotic & Eukaryotic Cells
Prokaryotic Cells Cont’d
Smaller compared to other cells
Simple structure
Contain no membrane-bound organelles
All types of bacteria are prokaryotic
All are unicellular
A Typical Prokaryote

5. “Euk-Nuc” because nucleus is present.
Chapter 7
Cellular Structure and Function
7.1 Prokaryotic & Eukaryotic Cells
Eukaryotic Cells
Origin of the name
eu- = true
karyon = nucleus
Contain a true nucleus
Memorization Tip:
“Euk-Nuc” because nucleus is present.

6. Larger compared to other cells
Chapter 7
Cellular Structure and Function
7.1 Prokaryotic & Eukaryotic Cells
Eukaryotic Cell
Larger compared to other cells
Complex structure
Contains membrane-bound organelles
Includes all plant, animal, fungus, & protist cells
Unicellular or multicellular

7. Membrane-Bound Organelle
Chapter 7
Cellular Structure and Function
7.1 Prokaryotic & Eukaryotic Cells
Membrane-Bound Organelles
Surrounded by a single or double barrier
Includes:
Nucleus
Mitochondria
Chloroplasts
Endoplasmic Reticulum
Golgi Apparatus
Lysosomes
Example of a
Membrane-Bound Organelle

8. Are Viruses Living? (What do you think?)
Are they cells?
Do they use energy to grow?
Do they use energy to respond to their surroundings?
Do they maintain homeostasis?

9. Who’s Hosting?
The only way viruses can survive is through a host cell.
Viruses need a host to multiply
Host-an organism that provides energy
Examples: people, birds, raccoon, tomatoes, potatoes

10. All cells, whether eukaryotic or prokaryotic, have a plasma membrane.
Chapter 7
Cellular Structure and Function
7.1 Formative Questions
True or False
All cells, whether eukaryotic or prokaryotic,
have a plasma membrane.

11. What feature of eukaryotic cells has enabled
Chapter 7
Cellular Structure and Function
7.1 Formative Questions
What feature of eukaryotic cells has enabled
them to develop more specific functions than
prokaryotic cells?
nucleus
organelles
genetic material (DNA)
larger cell size