All Cells Must Have 1 Cell membranes A

All Cells Must Have……. 1. Cell membranes – A protective layer that covers the cell’s surface and acts as a barrier 2. Cytoplasm – A fluid inside of the cell 3. DNA The genetic material that carries the information needed to make new cells and new organisms 4. Ribosomes – Organelles which make protein

Prokaryotic Cells • Prokaryotes – Do not have membrane bound organelles • An organelle is one of the small bodies in a cell’s cytoplasm that has specific functions – 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 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 – Extremophiles • Heat-Loving • Salt-Loving – Methane-making • Can live near volcanic vents

Eukaryotic Cells • Have membrane bound organelles • 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! • Most Eukaryotic organisms are Multicellular – Made of many cells

Prokaryotic Vs. Eukaryotic Cell

Which one is it? ? !!

Venn Diagram of Eukaryotic vs. Prokaryotic Eukaryotic Prokaryotic