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7.1 – Prokaryotic & Eukaryotic Cells

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.

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7.1 – Prokaryotic & Eukaryotic Cells

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  1. 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.

  2. Cellular Structure and Function Chapter 7 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.

  3. Cellular Structure and Function Chapter 7 7.1 Prokaryotic & Eukaryotic Cells Prokaryotic Cells Cont’d • Smaller compared to other cells • Simple structure • Contain nomembrane-bound organelles • All types of bacteria are prokaryotic • All are unicellular A Typical Prokaryote

  4. Cellular Structure and Function Chapter 7 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.

  5. Cellular Structure and Function Chapter 7 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

  6. Cellular Structure and Function Chapter 7 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

  7. 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?

  8. 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

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

  10. Cellular Structure and Function Chapter 7 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

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