Mind Stretcher ONE Robert Hooke 1. How many Cells does an Egg have? 4. Who was the first person to describe cells? 5. What are the parts to the cell theory? ONE Robert Hooke All organisms are made of one or more cells. The cell is the basic unit of all living things. All cells come from existing cells.

All Cells Must Have……. Cell membranes Cytoplasm DNA

Prokaryotic Cells Prokaryotes Do not have membrane bound organelles Do not have a Nucleus Classified into two major groups Bacteria Archaea

Bacteria Most Common Prokaryotes Smallest of all cells 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 Bacteria Have Three Shapes Sphere Rod Spiral Rods Spherical Spiral

Archaea Different from bacteria because they have eukaryotic type ribosomes Different cell wall and cell membrane from all other cells Live in extreme environments Extremophiles Heat-Loving Salt-Loving Methane-making Can live near volcanic vents

Eukaryotic Cells Have membrane bound organelles and a nucleus Largest of all cells 10 times larger than bacteria cells ALL other living things (that are not bacteria or archaea) are made of eukaryotic cells! Can be unicellular (made of 1 cell) or multicellular (made of many cells

Prokaryotic Vs. Eukaryotic Cell

Super Slueth Find someone who can name the 3 things all cells have. Find someone who can tell you the 2 major groups of prokaryotic cells. Find someone who knows the most common type of prokaryote. Find someone who knows the smallest type of cell. Find someone who knows the 3 shapes of bacteria. Find someone who knows how Archea differ from other bacteria. Find someone who knows what eukaryotic cells have that prokaryotes do not. Find someone who knows the largest type of cells. Find someone who when called on can summarize this lesson. (Only need their name here.)