2. Cells

3. Cells No not that cell!!! Cells make up all living things….. Smallest Thing that is considered alive

4. Single Cells

5. Cells The smallest unit that is able to perform the basic functions of life. Basic Functions of life ◦ Reproduction ◦ Respond to environment ◦ Develop and grow ◦ Able to meet the needs (energy)

6. Cell Theory Every living thing is made of one or more cells Cells carry out functions of life Cells come from other living cells

7. Two types of Cells Prokaryotic Cells ◦ Simple cells with no nucleus the genetic material floats around in the cytoplasm Eukaryotic Cells ◦ Complex cells with a nucleus to house the genetic material. Eukaryotic cells can be plantlike or animal like.

8. Types of Cells Prokaryotic Cells ◦ Only have cell membrane, cytoplasm, and genetic material ◦ Simple celled, no nucleus ◦ Bacteria  3 types  Bacilli – rod shaped  Cocci – round shaped  Spirilla – spiral shaped Eukaryotic Cells ◦ Complex celled, have a nucleus ◦ Several cell organelles ◦ Unicellular and multicellular

9. Every cell has three parts Cell membrane ◦ Protective outside covering that controls what enters and leaves the cell Cytoplasm Gelatin like substance that is on inside of the cell. DNA Heredity information for reproduction

10. Plantlike or Animal like Plantlike cells have a unique structure called a cell wall. The cell wall is a tough ridged outer covering that give the cell shape. Animal like cells do not have cell walls

13. Cell Membrane Thin membrane on outside of cells Controls what enters and leaves the cell

14. Nuclear Membrane Surrounds the nucleus Controls what enters and leaves the nucleus

15. Cell Wall Plant cells only Strong outside coating made of cellulose Gives plants cells their box shape

16. Cytoplasm Gel like substance inside membrane of cell Where the organelles are located

17. Nucleus Center of cell plant and animal Control center of cell Contains genetic information

18. Endoplasmic Reticulum (A.K.A the ER) Twisting and winding membranes Outside the nucleus Transports materials around the cell Two types ◦ Smooth- no ribosomes ◦ Rough- ribosomes

19. Ribosome Small round structure Produces protein Attaches to ER

20. Mitochondria Bean-shaped with folded membranes Breaks down sugar for energy Power house of the cell

21. Vacuole Fluid-filled sacks Stores food, water, and waste Just think Vacuum

22. Lysosome Small, round shape Breaks down food, old cell parts, and waste Animal cells only

23. Chloroplast Green, oval Contains chlorophyll Used in photosynthesis converts sun’s energy to sugar Plant cell only

24. Golgi Body or Apparatus Stacked shaped Packages proteins to be sent out of cell

25. Cell Theory Rap Listen close to the story I tell. It's the rapping story of the living cell. It's a happy tune that's sort of cheery. About a real tough topic called the cell theory. All animals, plants, and protists too, Are made of cells with different jobs to do. They're the basic units of all organisms, And I hope by now you got the rhythm. It all started with one dude named Hooke. Who at some cork cells took a look. He used a scope and took his time. 'Cause a cell is small and thinner than a dime. Say 1, 2, 3, 4, Are you ready to learn some more? The animal cell has many parts, And you must know each one by heart. Like the farmer man in the dell. The nucleus controls the cell. its gives the orders -- kind of like a brain. And it's protected by a nuclear membrane. Around the cell, you'll find another "skin," The cellular membrane holds the whole cell in But its job isn't simple there's no doubt, It lets some particles go in and out. Now please don't lose your science enthusiasm, Listen to the story of the cytoplsm. All around the cell this thick fluid does go, But in the nucleus it will not flow. And don't forget those ribosomes - This is where proteins come from. These protein factories are so small, you'll agree, You need an electron microscope to see. Just when you thought you weren't having any fun, Along comes teh endoplasmic reticulum. These tubelike structures serve as a track, To carry stuff to the membrane and back. Now have you ever seen any doughnuts without holes? In a cell, they're called vacuoles. They're filled with stuff like H2O And they carry food so the cell can grow. Las of all, but not the very least, Mitochondria - mighty cellular beasts, Since they turn sugars into energy so well, We call them the powerhouse of the cell. Now my friend, you know it well, The unforgettable story of the living cell. "Science World" 10-5-90