Think about the 1 st 7slides then take notes on slides 8 &9 and do a quick illustration to help you...
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•Think about the 1 st 7slides then take notes on slides 8 &9 and do a quick illustration to help you remember (don’t worry about the exact dates. •continue reading to slide 14 and list 3 ways to tell a prokaryotic cell from a eukaryotic cell •Test your self looking at slide 17, then check yourself by looking at slide 18 •Draw & label a plant cell and an animal cell using slides 20 Part 1
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Transcript of Think about the 1 st 7slides then take notes on slides 8 &9 and do a quick illustration to help you...
•Think about the 1st 7slides then take notes on slides 8 &9 and do a quickillustration to help you remember (don’t worry about the exact dates.
•continue reading to slide 14 and list 3 ways to tell a prokaryotic cell from a eukaryotic cell•Test your self looking at slide 17, then check yourself by looking at slide 18•Draw & label a plant cell and an animal cell using slides 20 &20•Make a Venn diagram showing which organelles are found only in plant cells, only
in animal cells, or in both plant and animal cells.
Part 1
Who started the study of cells?What tools allow us to study cells?How are the polymers we studied used in cells?Which nutrient group carries out the majority of cell processes?How does a cell maintain homeostasis?How do cells make new and different cells?How do individual cells make a functioning organism?What happens when homeostasis is not
maintained?
Robert Hooke, 1635-1703, English Chemist,
Mathematician, Physicist, and Inventor
•Matthais Schleiden (Plants)
Theodor Schwann (Animals)
Germany 1839: all organisms made of cells.
Rudolf Virchow (Germany 1858): all cells come from cells.
Anton van Leeuwenhoek, 1632-1723, Wine Assayer, Surveyor, Cloth Merchant, Minor Public Official, and Inventor 1st to see living things
Cells are the basic units of life.
Write these notes
Robert Hooke 1600s saw cells and named them cells because they looked like cells
(rooms) in a monastery.
Schleiden 1838 discovered all plants are madeof cells.
Schwann 1839 discovered all animals are made of cells
Anton van Leeuwenhoek cells basic units of life
Rudolf Virchow 1858 discovered all cells come from cells.
Modern Cell theory was formed based on the observations of these scientists and consists of 3 main parts.
1. Cells are basic unit of life.
2. All organisms are made of cells.
3. Cells come from cells.1 2 3
Light microscopes use 2 lenses to form a clear image. Due to diffraction of light wavesthey can only magnify objects about 1000times(1millionth of a meter).
Electron Transmission Microscopes focus a beam of electrons allowing DNA or viruses to be visualized. Some can visualize structures 1 billionth of a meter in size.
Organelles in a grain of pollen from tobacco plant
appears flat
Electron Scanning Microscopes scan the surface of a specimen giving 3 dimensionalimages of the surface.
Drawing of prokaryote eukaryote
How can you tell a prokaryote from anEukaryotic cell?
One micron is 1/1000 of a millimeter
characteristic prokaryote eukaryote
size 1um=1millionth of a meter
Nucleus
Specialized organelles surrounded by membranes
Cell membrane
Cytoplasm
Number of cells
characteristic prokaryote eukaryote
size 1um=1millionth of a meter
.1um-10um10um-100um
Nucleusno Yes
Specialized organelles surrounded by membranes
no Yes
Cell membraneYes Yes
Cytoplasmyes Yes
Number of cells 1 1 or more
DNAIs this cellProkaryotic orEukaryotic?
Which are prokaryotic, and which are eukaryotic?
eukaryotic
prokaryotic
eukaryoticeukaryotic
prokaryoticprokaryotic
prokaryotic
prokaryotic
Artist rendition of A virus Electron scan of an
HIV virusViruses are Prokaryotic.
Plant Cell
Nuclearenvelope
Ribosome(attached)
Ribosome(free)
Smooth endoplasmicreticulum
Nucleus
Rough endoplasmic reticulum
Nucleolus
Golgi apparatus
Mitochondrian
Cell wall
CellMembrane
Chloroplast
Vacuole
Section 7-2
Figure 7-5 Plant and Animal Cells
Go to Section:
Animal Cell
Are these prokaryotic or eukaryotic?
Organelle: specialized internal structures in the cytoplasm of cells that carry out specific functions. (Division of labor) Like tiny organs.
Eukaryotic because prokaryotes don’t have lots of organelles.
Organelle: specialized internal structures in the cytoplasm of cells that carry out specific functions. (Division of labor) Like tiny organs.
Plants and animals have a lot of organelles in common.
Animal cellBoth plant and animal cellsAnimal cells Plant cells
Venn Diagram
Cytoplasm: fluid and organelles located between the Cell membrane and the nucleus.
Organelle: specialized internal structures in the cytoplasm of cells that carry out specific functions. (Division of labor) Like tiny organs.
Fill in the organelles where they belong.
