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Sponge: Set up Cornell Notes on pg. 25 Topic: 3.1 Prokaryotic vs. Eukaryotic Cells

3.1 Prokaryotic vs. Eukaryotic Cells. 2.1 Atoms, Ions, and Molecules. Sponge: Set up Cornell Notes on pg. 25 Topic: 3.1 Prokaryotic vs. Eukaryotic Cells Essential Question : Describe the difference between Eukaryotic and Prokaryotic cells. Don’t forget to add it to your T.O.Contents!.

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Sponge: Set up Cornell Notes on pg. 25 Topic: 3.1 Prokaryotic vs. Eukaryotic Cells

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  1. 3.1 Prokaryotic vs. Eukaryotic Cells 2.1 Atoms, Ions, and Molecules Sponge: Set up Cornell Notes on pg. 25 Topic: 3.1 Prokaryotic vs. Eukaryotic Cells Essential Question: Describe the difference between Eukaryotic and Prokaryotic cells. Don’t forget to add it to your T.O.Contents! Describe the difference between Eukaryotic and Prokaryotic Cells Key Concept: Cells are the basic unit of life

  2. On the top of pg. 24: • What do you think about when you hear the word “cell”? (Think of more than one type) • What do these “cells” have in common?

  3. These are some things that you may think of when you think of a cell: Cell phone jail cell monk’s cell cell They have/are: structure, small, things inside, matter, mass, made of atoms, used by humans…

  4. Main Ideas • Early studies led to the development of the cell theory • Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells.

  5. KEY CONCEPT Cells are the Basic unit of life. Macrophages- play an important role in your immune system- take in a digest foreign materials (red= bacteria)

  6. Objective 1c. Students know how prokaryotic cells, eukaryotic cells (including those from plants and animals), and viruses differ in complexity and general structure.

  7. The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell theory. Concluded that ALL living things are made of cells Proposed that all cells come from other cells First to identify cells and named them Made better lenses for microscopes First to note that plants are made of cells

  8. Robert Hooke • In 1665 he used the three-lens compound microscope to examine thin slices of cork • He observed that cork is made of tiny, hallow compartments • These compartments reminded Hooke of small rooms • found in monasteries (where monks live), so he • named them cells.

  9. More was learned about cells as microscopes improved.

  10. Cells Red blood cells cork

  11. How does the size of a cell in a blue whale compare to the size of the cell in a tadpole?

  12. How does the size of a cell in a blue whale compare to the size of the cell in a tadpole? A: Most cells in a whale are the same size as in a tadpole! So what makes a blue whale so much bigger? A whale has far more cells.

  13. The Cell theory has three principles. • 1. All organisms are made of cells.

  14. 2. All existing cells are produced by other living cells.

  15. 3. The cell is the most basic unit of life.

  16. One of the 3 principles of cell theory is that ALL existing cells are produced by other existing cells. Apply this principle to a cut on your arm. (Explain what is happening throughout the healing process)

  17. Answer One of the 3 principles of cell theory is that ALL existing cells are produced by other existing cells. Apply this principle to a cut on your arm. • You get a cut • You start to bleed • You form a scab • Messages are sent to skin cells to replicate • Skin cells replicate through mitosis • New skin cells are created • Scab falls off • You are healed!

  18. All cells share certain characteristics:

  19. Bacterium (colored SEM; magnification 8800x) All cells share certain characteristics: • Cells tend to be microscopic.

  20. cell membrane Bacterium (colored SEM; magnification 8800x) All cells share certain characteristics: • Cells tend to be microscopic. • All cells are enclosed by a membrane.

  21. cell membrane cytoplasm Bacterium (colored SEM; magnification 8800x) All cells share certain characteristics • Cells tend to be microscopic. • All cells are enclosed by a membrane. • All cells are filled with cytoplasm.

  22. nucleus organelles cell membrane • There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus. • The nucleus holds the DNA • Have membrane-bound organelles • May be multi-cellular or single-celled organisms Draw and label picture on top of p. 24

  23. Organelles: structures that are specialized to perform distinct processes within a cell. The nucleus is usually the largest and most visible organelle.

  24. Things that have Eukaryotic Cells: PLANTS ANIMALS FUNGI

  25. Bacterium (colored SEM; magnification 8800x) Cytoplasm: is a jellylike substance that contains dissolved molecular building blocks- such as proteins, nucleic acids, minerals, and ions

  26. cytoplasm • Prokaryotic cells do not have a nucleus. • do not have membrane-bound organelles • DNA is in the cytoplasm • All are microscopic, single-celled organisms cell membrane Draw and label picture on top of p. 24

  27. Things that have prokaryotic cells Archaea Bacteria

  28. On pg. 26: • Title your paper • Title of videos: • Intro to cells #1 • Intro to cells #2 • What is a cell? • Bacteria • The littlest Assassins • How viruses work 2.1 Atoms, Ions, and Molecules 3.1 Prokaryotic/Eukaryotic/Virus Video Notes Intro to cells # 1: Intro to cells #2: What is a cell?: Bacteria: The littlest Assassins: How Viruses Work: • Leave room for at least 3 bullets each!!!! • Add to T.O.Contents

  29. Viruses • Virus- An infective agent that typically consists of a DNA or RNA strand in a protein coat. • multiply onlywithin the living cells of a host • Antibiotics will not work on them • Vaccines prevent them Protein Coat EX: Herpes virus Influenza Chickenpox Ebola virus Draw and label picture on top of p. 24

  30. Movies about Viruses I am Legend 28 weeks later The Stand (book) Osmosis Jones The Happening

  31. On the bottom of pg. 24: Draw a double-bubble map comparing and contrasting Eukaryotic and Prokaryotic cells

  32. Cells tend to be microscopic No nucleus Has a nucleus All are produced by other cells Prokaryotic cells All cells are enclosed by a membrane Always single celled Eukaryotic cells Basic unit of life No membrane-bound organelles Has membrane-bound organelles • All cells are filled with cytoplasm.

  33. Homework In the middle section of pg. 24: Draw a tree map classifyingProkaryotic cells, Eukaryotic cells, and Viruses Cells and Viruses Eukaryotic Prokaryotic Viruses

  34. Draw a tree map classifyingProkaryotic cells, Eukaryotic cells, and Viruses Cells and Viruses Eukaryotic Viruses Prokaryotic • Nucleus • DNA in protein Coat • No nucleus • Organelles • Needs a host • No organelles • Antibiotics do not work on them • Single-cellular • Multi-cellular • DNA in cytoplasm • And Single-cellular • DNA in nucleus • Vaccines prevent

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