Protocol for preparation of mouse liver Kupffer cells and ...
Introduction to Cells - Ms. Smithmssmithbiology.weebly.com/uploads/6/8/0/5/68054121/3.1... ·...
Transcript of Introduction to Cells - Ms. Smithmssmithbiology.weebly.com/uploads/6/8/0/5/68054121/3.1... ·...
Robert Hooke
• Cork Cells
Leeuwenhoek
• Powerful Microscope (for his time)– Rotifers
– Human blood cell
– Bacteria
The Cell Theory
• All organisms are made of one or more cells.• All the life functions of organisms occur
within cells. • All cells come from already existing cells.
Two Categories of Cells
1. Prokaryotic
2. Eukaryotic
Prokaryotic Cells
• No nucleus• DNA floats around in the cell
• Found in single-cells organisms• Bacteria
Eukaryotic Cells
• Have a nucleus• Have organelles• Found in multicellular organisms
• Fungi, dogs, humans, etc
Organelles
Amoeba Sisters- Prokaryotes and Eukaryotes
Diversity of Cells
• All cells share functions such as obtaining and using energy, responding to the environment, and reproducing
• Cells differ with unique structure and function
Skin Cells
Muscle Cells
Liver Cells
Neurons
Blood Cells
Viruses
• Not prokaryotes or eukaryotes• Have DNA, but are not considered living• Viruses infect host cells, and make the host
cells make copies of the virus DNA