Warm Up: On a brand new page Use your timeline notes C E B D A All living things are made of one or more cells Cells are the basic units of structure and function in all living things All cells come from other cells

Critical question Explain why prokaryotic cells are smaller than eukaryotic cells.

Engage: Describe what you see in this picture Color? Shapes? Different sizes? Engage:

Scientists to Remember Robert Hooke (1665) – Observed “cells” in cork

Anton van Leeuwenhoek (1674) Father of Microscopy Saw tiny living things in pond water. “Diatoms” – small aquatic protists

The Discovery of Cells Prokaryotic Before “no” nucleus Eukaryotic true

Compare prokaryotes & Eukaryotic cells Has nucleus & nuclear envelope Highly Organized Protists Proteins Unicellular Carbs Has membrane bound Organelles NO membrane bound organelles Lipids Nucleic acids Ribosomes DNA animals Multicellular NO nucleus Larger Achaea plants Bacteria fungi smaller

Why do we learn about Macromolecules? Carbohydrate Protein Nucleic Acid (DNA!) Lipids (Fats) Because these are what you are made of!!! Mention Osmosis and Active Transport! Protein

Eukaryotes Has a nucleus with a nuclear envelope Bigger and more complex than prokaryotes Have membrane bound Organelles DNA – double-stranded and forms chromosomes (highly organized) Can be uni- OR multicellular organisms Ex: animals, plants, fungi, (some) protists

Prokaryotes NO nucleus NO membrane bound organelles (does contain ribosomes) ALL are unicellular Smaller than eukaryotic cells Believed to have given rise to eukaryotic cells smaller and more simple DNA – single strand and circular Ex: ALL Bacteria and archea 10

Similarities Contain all four biomolecules Have ribosomes Have DNA (lipids, carbs, proteins, and nucleic acids) Have ribosomes Have DNA Similar Metabolism Can be unicellular Have cell/plasma membranes or cell wall

Pro Eu 1. Nuclues & Nuclear envelope 4. No Nuclues & No Nuclear envelope 3. DNA (EU – double stranded and Pro are single stranded 5. & 6. Archaea & Bacteria 2. Membrane bound organelles 9. No Membrane bound organelles 7. Highly Organized 8. Unicellular 14. smaller 10. animals 15. Protists 11. Larger 12. plants 16. Proteins 17. Carbohydrates 18. Lipids 19. Nucleic Acids 13. fungi 21. Multicellular