NOTE SHEET 4 – The 2 Main Types of Cells Nostoc (High Power) Spirogyra (High Power)

What do all cells have in common? ALL cells have a cell membrane, cytoplasm, DNA, and ribosomes Cell membrane – the flexible outer covering of a cell that controls what goes in and out

What do all cells have in common? Cytoplasm – the liquid substance that fills up a cell DNA – cell instructions Ribosomes – assembly site for proteins

What are the two main types of cells? Prokaryotic cells – small, simple cells that have a cell membrane, cytoplasm, DNA, and ribosomes (ex. bacteria cells)

Nostoc (Cyanobacteria)

What are the two main types of cells? Eukaryotic cells – larger, more complex cells that have a nucleus and other parts (ex. animal cells and plant cells) Nucleus – cell part that holds DNA and controls most cell activities

Spirogyra (Protist)

Another way to look at it…

All cells have a cell membrane, cytoplasm, and DNA

The 2 main types of cells are prokaryotic cells and eukaryotic cells

Prokaryotic cells are small, simple, and have no nucleus

Bacteria cells are examples of prokaryotic cells

Eukaryotic cells are larger, more complex cells that have a nucleus and other parts

Animal cells and plant cells are examples of eukaryotic cells

Prokaryotic Cell Drawing

Prokaryotic Cell – Cell Membrane

Prokaryotic Cell - Cytoplasm

Prokaryotic Cell - DNA

Eukaryotic Cell Drawing

Eukaryotic Cell – Cell Membrane

Eukaryotic Cell - Cytoplasm

Eukaryotic Cell - Nucleus

Eukaryotic Cell - DNA

http://www. cellsalive. com/howbig. htm http://learn. genetics. utah http://www.cellsalive.com/howbig.htm http://learn.genetics.utah.edu/content/begin/cells/scale/