Mind Stretcher Write (3) things that you know about cells. Think about your Directed Reading 3-1… Don’t look at your notes until you have tried to remember on your own!

All cells must have these 3 Organelles……. Cell membranes Cytoplasm DNA

Prokaryotic Cells No membrane bound organelles No Nucleus Two major types: Bacteria Archaea

Bacteria Most Common Prokaryote Smallest Can live almost everywhere DNA is long and circular (Shaped like a twisted rubber band) Not all Bacteria are bad!! (We have bacteria on our teeth, skin, and in our digestive systems! They help us!!!)

Shapes of Bacteria 3 different shapes: Sphere-Streptococcus Rod-E. Coli Spiral- Cholera Spherical Rods Spiral

Archaea Different from bacteria because of Ribosomes Archaea ribosomes are like those of eukaryotic cells Have different cell wall and cell membrane from all other cells Live in EXTREME environments Called “Extremophiles” Heat-Loving Salt-Loving Methane-making Can live near volcanic vents

TedEd: How bacteria cells changed the world… https://youtu.be/dO2xx-aeZ4w

Eukaryotic Cells Have “membrane bound” organelles Have a Nucleus Largest of all cells 10 times larger than bacteria ALL other living things (that are not bacteria or archaea) are made of eukaryotic cells! Most are Multicellular- (Made of many cells)

Prokaryotic Vs. Eukaryotic Cell

Which one is it??!! Prokaryote

Which one is it??!! Eukaryote

Which one is it??!! Prokaryote

Prokaryotes vs. Eukaryotes- Video clip https://youtu.be/RQ-SMCmWB1s

Ticket out the Door: Bubble in T for True and F for False: Prokaryotic cells are more complex than eukaryotic cells. Eukaryotic cells are much smaller than prokaryotic cells. Both cells contain DNA. Prokaryotic cells have a nucleus. Archaea is a type of prokaryotic cell.

Mind Stretcher 1. Why are cells small? Larger the cell the more nutrients needed and the more waste created 2. How Many parts are there to the Cell Theory (be prepared to describe each one! ) Three 3. What are the two types of Prokaryotic Cells? Archaea and Bacteria

Eukaryotic vs. Prokaryotic Ideas for your Venn: Organelles inside each Examples of specific types of cells Simple or Complex? Size of cells

Moves the stage up and down for focusing Mind Stretcher 1. What is the total power of magnification if your objective lenses range from 4x-40x? 40X-400X 2. What is the function of the COARSE adjustment knob? Moves the stage up and down for focusing 3. Which part of the microscope holds the objective lenses? Nosepiece