• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Aug. 23(the cell)

Aug. 23(the cell)






Total Views
Views on SlideShare
Embed Views



0 Embeds 0

No embeds



Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
Post Comment
Edit your comment

    Aug. 23(the cell) Aug. 23(the cell) Presentation Transcript

    • Biology I Mr. Nettles
    • Agenda- Tuesday, August 23, 2011
      • Name that Guy – 15 min
      • Warm Up – 5 min
      • Daily Lesson – 30 min
      • Wrap Up – 5 min
    • Today’s Objectives
      • I will identify the scientists who contributed to the cell theory.
      • I will define the words prokaryotic, eukaryotic, and organelle .
      • I will define and describe the primary organelles of eukaryotic cells.
      • I will articulate the function of each organelle.
    • Name that Guy
    • Procedure
      • Read a brief paragraph of each scientist and underline key information .
      • Form teams of two and discuss each scientist .
      • As a team, come up with a one sentence summary of what each scientist contributed to our understanding of cells.
      • Each team shares their summary of each scientist with the class.
      • Play “Name that Guy” (Quiz, Quiz, Trade style)
    • Warm-Up
      • Define cell.
      • Which scientist came up with the name “ cell ” by studying a piece of dead cork?
      • Complete the statement: “All cells are produced by _____________.”
    • What you need to know about ALL Cells
      • Tend to be microscopic
      • Have a few key structures:
        • are enclosed by a membrane .
        • are filled with cytoplasm .
      Bacterium (colored SEM; magnification 8800x) cell membrane cytoplasm
      • Eukaryotic cells have a nucleus and membrane-bond organelles
        • “ Eu” means “true”
      Eukaryotic Cell nucleus cell membrane organelles
    • Eukaryotic Cell
        • Prokaryotic cells do not have a nucleus .
        • Prokaryotic cells do not have membrane-bound organelles .
          • “ Pro” means “no”
      Prokaryotic vs. Eukaryotic nucleus cell membrane organelles cytoplasm
    • What are organelles ?
      • Definition: Organelles are specialized structures that perform important cellular functions within eukaryotic cells
      • You have a body that has organs that do specific things so your whole body will work. An organelle is like an organ for the cell.
    • Organelles found in ALL eukaryotic cells :
      • Nucleus
      • Nucleolus
      • Cytoplasm
      • Cell membrane
      • Ribosome
      • Endoplasmic Reticulum
      • Golgi apparatus
      • Mitochondria
      • Lysosomes
    • **A little bit of help**
      • For each organelle (cell organ) I will give you its DEFINITION and its FUNCTION .
        • The DEFINITION is a short description of what it looks like, where it is found, and how we can recognize it.
          • Definition of an iPOD: a small technological device that comes in a variety of colors and contains songs that you can play.
        • The FUNCTION is what it does…it’s purpose.
          • Function of an iPOD: an iPOD is used to play music and is often used when someone is studying, exercising or other times. It is small so it can be carried around.
    • Nucleus
      • DEFINITION :
        • Large organelle in the center of the cell that controls everything that happens in the cell… the “brain” of the cell
      • FUNCTION :
        • Stores all genetic material (DNA)
        • Involved in duplication of DNA during cellular division (MITOSIS)
    • Nucleus
    • Nucleolus
      • DEFINITION :
        • small, dense structure in the nucleus that creates rRNA.
      • FUNCTION :
        • Creates ribosomal RNA (rRNA)
            • rRNA is very important in making ribosomes
            • Ribosomes are involved in making proteins
    • Nucleolus
    • Cytoplasm
      • DEFINITION :
          • All material in the cell except for the nucleus.
          • A gooey fluid that fills the cell and acts as support
          • Made mostly of water
      • FUNCTION :
          • It supports the cell…kind of like bubble wrap or packing peanuts support and protect a package.
    • Cytoplasm
    • Cellular membrane
      • DEFINITION :
        • thin, flexible layer that surrounds the cell’s cytoplasm.
      • FUNCTION :
        • Controls what goes into and out of the cell
        • Protection
    • Cellular membrane
    • Ribosome
      • Definition :
        • A small, dense organelle made mostly from rRNA (ribosomal RNA)
        • Attached to endoplasmic reticulum or free floating in the cytoplasm
      • Function :
        • Makes proteins
    • Ribosome
    • Endoplasmic Reticulum (ER):
      • Definition :
          • A system of folded tube-like structures attached to the nucleus
      • Function :
          • Folds proteins
          • Transports proteins
          • Site of ribosomes
    • Endoplasmic Reticulum (ER):
    • Golgi Apparatus:
      • Definition :
        • A system of folded tube-like structures NOT attached to the nucleus
      • Function :
        • packages things that are made in the cell to be transported to another organelle or outside of the cell (i.e. enzymes, proteins, hormones)
    • Golgi Apparatus
    • Mitochondria
      • Definition :
        • A membrane-enclosed organelle with cristae (folds) inside.
      • Function :
        • Creates the ATP (chemical energy ) that most of the cell uses.
        • “Powerhouse of the cell”
    • Mitochondria
    • Lysosomes
      • Definition :
        • Small organelles within the cytoplasm that are filled with enzymes
      • Function :
        • Break down …
          • food into small particles that can be used by the rest of the cell
          • organelles that are no longer needed and other waste in the cell
    • Wrap-Up
      • What is known as the “powerhouse of the cell” and creates the cell’s chemical energy?
      • Define prokaryotic.
      • What is the purpose or function of cytoplasm?