1. Lesson Overview Life is Cellular

2. Lesson Overview Lesson Overview Life Is Cellular THINK ABOUT IT What’s the smallest part of any living thing that still counts as being “alive?” Can we just keep dividing living things into smaller and smaller parts, or is there a point at which what’s left is no longer alive?

3. Lesson Overview Lesson Overview Life Is Cellular Early Microscopes Mid-1600s scientists began using compound microscopes to observe living things. In 1665, Robert Hooke used a microscope to look at cork- nonliving plant material Cork looked like tiny, empty chambers Hooke called the cork “cells” cells are not empty chambers, but working parts, each with its own function.

4. Lesson Overview Lesson Overview Life Is Cellular This is what Hooke saw. The cork reminded him of monastery cells-places where monks stay (chambers)

5. Lesson Overview Lesson Overview Life Is Cellular Early Microscopes Anton van Leeuwenhoek examined pond water & sample taken from a human mouth. He drew the organisms he saw in the mouth-bacteria.

6. Lesson Overview Lesson Overview Life Is Cellular The Cell Theory cells are the basic units of life 1838, German botanist Matthias Schleiden stated-plants made of cells. 1839, German biologist Theodor Schwann stated-animals made of cells. 1855, German physician Rudolf Virchow concluded that new cells could be produced only from other cells,

7. Lesson Overview Lesson Overview Life Is Cellular

8. Lesson Overview Lesson Overview Life Is Cellular The Cell Theory summarized in the cell theory, a fundamental concept of biology. The cell theory states: -All living things are made up of cells. -Cells are the basic units of structure and function in living things. -New cells are produced from existing cells.

9. Lesson Overview Lesson Overview Life Is Cellular The Discovery of the Cell What is the cell theory?

10. Lesson Overview Lesson Overview Life Is Cellular The Discovery of the Cell What is the cell theory? The cell theory states: - All living things are made up of cells. - Cells are the basic units of structure and function in living things. - New cells are produced from existing cells.

11. Lesson Overview Lesson Overview Life Is Cellular Exploring the Cell How do microscopes work?

12. Lesson Overview Lesson Overview Life Is Cellular Exploring the Cell How do microscopes work? Most microscopes use lenses to magnify the image of an object by focusing light or electrons.

13. Lesson Overview Lesson Overview Life Is Cellular Prokaryotes and Eukaryotes Cells fall into two broad categories, depending on whether they contain a nucleus. Nucleus is a large membrane-enclosed structure that contains the cell’s genetic material in the form of DNA. The nucleus controls many of the cell’s activities.

14. Lesson Overview Lesson Overview Life Is Cellular Prokaryotes and Eukaryotes Eukaryotes are cells that enclose their DNA in nuclei. Prokaryotes are cells that do not enclose DNA in nuclei.

15. Lesson Overview Lesson Overview Life Is Cellular Prokaryotic cells-smaller & simpler prokaryotes grow, reproduce, & respond to the environment, and some can even move by gliding along surfaces or swimming through liquids. bacteria =prokaryotes. Prokaryotes

16. Lesson Overview Lesson Overview Life Is Cellular Eukaryotes Eukaryotic cells are larger & more complex contain a lot of structures & internal membranes. highly specialized. eukaryotes: plants, animals, fungi, and “protists.”

17. Lesson Overview Lesson Overview Life Is Cellular PRO=NOEU=DO

18. Lesson Overview Lesson Overview Life Is Cellular Prokaryotes and Eukaryotes cells range from 5 to 50 micrometers in diameter, the smallest bacteria are only 0.2 micrometers across. the giant amoeba Chaos chaos may be 1000 micrometers in diameter, all cells contain the molecule that carries biological information— DNA. All cells are surrounded by a thin, flexible barrier -cell membrane.

19. Lesson Overview Lesson Overview Life Is Cellular Prokaryotes and Eukaryotes How are prokaryotic and eukaryotic cells different?

20. Lesson Overview Lesson Overview Life Is Cellular Prokaryotes and Eukaryotes How are prokaryotic and eukaryotic cells different? Prokaryotic cells do not separate their genetic material within a nucleus. PRO-NO In eukaryotic cells, the nucleus separates the genetic material from the rest of the cell. EU-DO!!!

21. Lesson Overview Lesson Overview Life Is Cellular You will be taking a quiz. Tell me if the following organisms are Prokaryotic or Eukaryotic… Remember Pro=No Nucleus (DNA is free floating in cytoplasm Eu=Do (DNA enclosed in nucleus)

22. Lesson Overview Lesson Overview Life Is Cellular Sponge????

23. Lesson Overview Lesson Overview Life Is Cellular Yeast

24. Lesson Overview Lesson Overview Life Is Cellular Step throat-Streptococcus

25. Lesson Overview Lesson Overview Life Is Cellular Ring worm

26. Lesson Overview Lesson Overview Life Is Cellular Protista-paramecium

27. Lesson Overview Lesson Overview Life Is Cellular Venus Fly Trap

28. Lesson Overview Lesson Overview Life Is Cellular Tapeworm

29. Lesson Overview Lesson Overview Life Is Cellular

30. Lesson Overview Lesson Overview Life Is Cellular

31. Lesson Overview Lesson Overview Life Is Cellular

32. Lesson Overview Lesson Overview Life Is Cellular Summarize Out of the Kingdoms: Bacteria, Protists, Fungus, Plants, and Animals. Insert which one goes in which side of the chart Prokaryote-NO NUCLEUSEukaryote-HAS MEMBRANE BOUND NUCLEUS