7.1 – Prokaryotic & Eukaryotic Cells State Standard SB1a Explain the role of cell organelles for...
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Transcript of 7.1 – Prokaryotic & Eukaryotic Cells State Standard SB1a Explain the role of cell organelles for...
7.1 – Prokaryotic & Eukaryotic Cells
State StandardSB1a
Explain the role of cell organelles for both prokaryotic & eukaryotic cells, including the cell membrane, in maintaining homeostasis & cell reproduction.
SB3dCompare & contrast viruses with living
organisms.
Prokaryotic Cells
Origin of the name: pro- = before Karyon = nucleus
Cellular Structure and Function
7.1 Prokaryotic & Eukaryotic Cells
Chapter 7
• 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.
Prokaryotic Cells Cont’d
Smaller compared to other cells
Simple structure
Cellular Structure and Function
Contain no membrane-bound organelles
All types of bacteria are prokaryotic
All are unicellular
7.1 Prokaryotic & Eukaryotic Cells
Chapter 7
A Typical Prokaryote
Eukaryotic Cells
Origin of the name eu- = true karyon = nucleus
Cellular Structure and Function
Contain a true nucleus
Memorization Tip:“Euk-Nuc” because nucleus is present.
7.1 Prokaryotic & Eukaryotic Cells
Chapter 7
Eukaryotic Cell Larger compared to
other cells
Cellular Structure and Function
Complex structure Contains membrane-
bound organelles
Includes all plant, animal, fungus, & protist cells
Unicellular or multicellular
7.1 Prokaryotic & Eukaryotic Cells
Chapter 7
Membrane-Bound Organelles
Surrounded by a single or double barrier
Cellular Structure and Function
Includes: Nucleus Mitochondria Chloroplasts Endoplasmic Reticulum Golgi Apparatus Lysosomes
7.1 Prokaryotic & Eukaryotic Cells
Chapter 7
Example of aMembrane-Bound Organelle
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?
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
True or False
All cells, whether eukaryotic or prokaryotic, have a plasma membrane.
Cellular Structure and FunctionChapter 7
7.1 Formative Questions
A. nucleus
B. organelles
C. genetic material (DNA)
D. larger cell size
What feature of eukaryotic cells has enabled them to develop more specific functions than prokaryotic cells?
Cellular Structure and FunctionChapter 7
7.1 Formative Questions