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Chapter 1

Chapter 1. 1.1 Notes The Cell is the Basic Unit of Life. Prokaryotic VS. Eukaryotic. Prokaryotic/Unicellular – made up of only one cell Ex. Stentor Eukaryotic/Multicellular – made up of two or more cells Ex. Humans Eukaryotic - Has all the organelles

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Chapter 1

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  1. Chapter 1 1.1 Notes The Cell is the Basic Unit of Life

  2. Prokaryotic VS. Eukaryotic • Prokaryotic/Unicellular – made up of only one cell Ex. Stentor • Eukaryotic/Multicellular – made up of two or more cells Ex. Humans • Eukaryotic - Has all the organelles • Both unicellular and multicellular living things are called organisms Stentor

  3. 1.1 Observing Living Things • Living things all: • Respond to their environment • Need energy • Grow • Reproduce • Get rid of wastes • Living things are in every environment on earth • Largest living organism = honey mushroom 890 hectares • Strongest living organism = rhinoceros beetle 850x • Fastest living organism = cheetah 100km/hr

  4. The Microscope • Use microscope to look at small organisms • Types of microscopes – magnifying glass, compound microscope, electron microscopes, and scanning electron microscopes • Electron microscopes produce pictures called electron micrographs • Anton Van Leeuwenhoek = first person to build a microscope

  5. The Compound Microscope

  6. The Compound Microscope

  7. Magnification of Compound Microscopes • When you look through a compound microscope the image you see will be: • Magnified – Inverted – Reversed • Magnification of Compound Microscopes • Low power = 4x • Medium power = 10x • High power = 40x • Eyepiece = 10x • Total Magnification = objective lens x eyepiece • Low power= Ex. 4x10 = 40X • Medium power = ________________________ • High power = ___________________________ Letter e under a microscope

  8. How Close Can We Go? • Resolving Power • =the ability to distinguish between two dots or objects that are very close together • The microscope extends the human eyesight allowing us to see things that are closer together. (.2um for the compound microscope)

  9. What Some Real Cells Look Like…

  10. Your Turn! • Page 20 - Look at the prefixes and know how to use them • Reading Check Page 15 – Questions 1-5 • Page 21 – Questions 5-8

  11. What You Need for Your Labs How to Label Microscope Diagrams 1. Always draw diagrams in pencil2. Keep diagrams fairly large3. Name the diagram or object4. Label the diagram5. State the magnification, if using a microscope6. Include any important notes about the diagram, such as the stain used

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