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Cells! - PowerPoint PPT Presentation


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http://www.youtube.com/watch?v=gFuEo2ccTPA -- Introduction (Click here). Cells!. Amoeba Proteus. Plant Stem. Bacteria. Red Blood Cell. The Animal Cell. The Plant Cell. http://waynesword.palomar.edu/images/plant3.gif. Prokaryotic Cells. NO NUCLEUS!!! First cell type on earth

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cells

http://www.youtube.com/watch?v=gFuEo2ccTPA -- Introduction (Click here)

Cells!

Amoeba Proteus

Plant Stem

Bacteria

Red Blood Cell

the plant cell
The Plant Cell

http://waynesword.palomar.edu/images/plant3.gif

prokaryotic cells
Prokaryotic Cells
  • NO NUCLEUS!!!
  • First cell type on earth
  • Example: Bacteria!
eukaryotic
Eukaryotic
  • Have a NUCLEUS and membrane-bound organelles---include most living things

Plant

Animal

http://library.thinkquest.org/C004535/eukaryotic_cells.html

cells1
Cells
  • Smallest living unit
  • Most are microscopic
principles of cell theory
Principles of Cell Theory

1. All living things are made of cells

2. Smallest living unit of structure and function of all organisms is the cell

3. All cells arise from preexisting cells

discovery of cells
Discovery of Cells
  • Robert Hooke (1665)- coined the word “cells”
    • Observed sliver of cork
    • Saw “row of empty boxes”
    • He named these empty boxes CELLS!
cell theory
Cell theory
  • (1839)Theodor Schwann & Matthias Schleiden

“ all (living things) are made of cells”

-Schwann (animal); Schleiden (plants)

  • (50 yrs. later) Rudolf Virchow

“all cells come from cells”

the microscope microbe man
The Microscope Microbe Man!
  • Anton van Leeuwenhoek (1674)
    • Introduced the world to microbes. Observed tiny organisms in pond water.
    • Made books with sketches and descriptions
    • Built over 200 microscopes! (Hans and Janssen invented it though in the 1590’s)
cell membrane
Cell Membrane

Function: controls what goes in and out of the cell.

Analogy: like a bouncer at a club because a bouncer controls who can come in.

In BOTH plant and animal!!

cytoplasm
Cytoplasm

Function: a jelly-like substance that holds organelles in place

Analogy: like a jello fruit cup because the jello holds the fruit in place just like the cytoplasm does for the organelles!

In BOTH**

nucleus
Nucleus
  • Function: controls the cell’s activities
  • Analogy: like a president because a president controls what goes on in a country.
  • Both
ribosome
Ribosome

Function: Makes proteins

Analogy: like Kentucky Fried Chicken because KFC makes protein (chicken)!

BBoth

lysosome
Lysosome

Function: the cells stomach; breaks down food and cell parts

Analogy: like a car crusher because car crushers breaks down cars OR like a stomach

Only in Animal Cells

endoplasmic reticulum
Endoplasmic Reticulum

Function: moves proteins around the cell

  • *Rough ER: Has ribosomes on it!
  • *Smooth ER: No ribosomes.

Analogy: it’s like a train because trains move things from place to place or like UPS

**In BOTH

golgi apparatus
Golgi Apparatus

Function: storing & packing proteins

Analogy: like a packer because a packer will pack up your things and store them in a safe place.

**In Both

chromosomes
Chromosomes
  • Function: contains genetic DNA that is passed on
  • Analogy: like a drivers license or social security card because they both carry important information about you!
  • In Both
mitochondria
Mitochondria

Function: Provides energy. Powerhouse of the cell!!!

Analogy: like a power plant because it gives energy to the rest of the cell.

**Both**

choloroplast
Choloroplast
  • Function: takes solar energy ad turns it into chemical energy
  • Analogy: like a solar panel because a solar panel takes solar energy and turns it into electrical energy.
  • ONLY IN PLANTS!
cell wall
Cell Wall
  • Function: supports and protects cell; in plants only
  • Freely permeable
  • *Why is the cell wall important?
  • * Only in plants
vacuole
Vacuole
  • Function: Store nutrients and water
  • Analogy: like a water balloon because it can hold water until you need to use it!

**In Both but a LARGE vacuole is ONLY in plants

Plant CellAnimal Cell

cytoskeleton
Cytoskeleton
  • Function: Provides shape and support for the cell. It’s the ‘skeleton’.
  • Analogy: It’s like our skeleton because our skeleton gives us support and shape. ***Both***
flagella cilia
Flagella / Cilia

Cilia on a Paramecium

Function: cell movement.

*In Animal and prokaryotic cells*

Flagella

interactive cells
Interactive cells!
  • http://learn.genetics.utah.edu/content/begin/cells/insideacell/