1. Cells The basic unit of living things

2. Agenda Cells Unit DO NOW: Observe the objects lettered to the right. List all the object you think are alive or fall in to the category of Living Things. Aim: to define the characteristics of living things; to identify living things based on characteristics; to state the cell theory HOMEWORK: Cells and Microscope Study Guide-due Thursday, December 19; Holiday Break Packet- due Monday, January 6, 2014 DO NOW: Is it ALIVE! NOTES: Living Things 101 Cell Theory p.6-11 G D C B A F E

3. 7 Signs of Life 1.Organization 2.Respond to environment 3.Perform chemical reactions 4.Take in energy 5.Grow 6.Reproduce 7.Die

4. Organization Living things are composed of one or more cells which are the basic units of life. Your skin, hair, fingernails, blood, bones, nerves, and muscles are all made up of cells. Plant leaves, stems, and roots are also made up of cells. These cells work together to keep the life form alive.

5. Responds to Environment Living things respond to things happening around them. Many living things can move. Just like you, they move to find food, to avoid danger, and to find shelter.

6. Performs Complex Chemical Reactions Inside all living things, complex chemical reactions take place to carry out the functions of life. Some of these are breaking down food to use for energy, building new cells, and repairing body parts

7. Takes in Energy All life forms need energy to survive. Energy is the "food" that allows organisms to do things.

8. Grow Almost all living things start their lives as smaller creatures. Over time, they grow and develop into adults.

9. Reproduce A very important part of the life of living things is the ability to reproduce, to make more of its species. Reproduction is the process of one or more living things creating another living thing.

10. Die Anything that is alive will eventually die. The time that something lives is called its lifespan. Some things have a lifespan of only a few hours or a few days while others can live for 100+years. Some bacteria and insects, for example, begin their lives, mature, reproduce, and then die, all within a few hours.

11. The Cell The smallest unit that can perform all life processes

12. Is it alive? Object Fingernail Candle Crystals Vinegar and Baking Soda Rose Textbook Goldfish Ms Johnson’s Dog, Cinci Living or Nonliving Living Nonliving Living Nonliving Living

13. Cell Theory and the Scientists Who Helped Shape It

14. Notes: Cell Theory aim: to state the cell theory Scientists  van Leeuwenhoek  Hooke  Schleiden  Schwann  Virchow Contribution

15. Anton van Leeuwenhoek Born: October 24, 1632 Died: August 30, 1723 He is known as the “Father of Microscopy.” http://en.wikipedia.org/wiki/Anton_van_Leeuwenhoek

16. Anton van Leeuwenhoek Discoveries: - 1673: He looked at pond scum under the microscope and discovered small organisms he called animalcules or little animals (Protists) - 1676: discovered bacteria http://www.kent.k12.wa.us/staff/TimLynch/sci_class/c hap09/lesson_protista/Protista_Lesson.html#Algae

17. Robert Hooke Born: July 18, 1635 Died: March 3, 1703 Wrote and published “Micrographia” Known as the “English Father of Microscopy” http://www-groups.dcs.st-and.ac.uk/~history/PictDisplay/Hooke.html

18. Robert Hooke Contributions: - He observed pieces of cork from the bark of a cork tree under the microscope. - His observations led him to coin the word “cell.” - “Cell”- means little rooms in Latin - He compared the small boxes to the small rooms that monks lived in. http://www.learner.org/channel/courses/essential/life/s ession1/closer1.html

19. Matthias Schleiden Born: April 5, 1804 Died: June 23, 1881 German botanist Discovered that all plants were made of cells Contributed to the creation of the cell theory http://www.britannica.com/eb/article- 9066147/Mathias-Jacob-Schleiden

20. Theodor Schwann Born: December 7, 1810 Died: January 11, 1882 German zoologist Concluded that all animals are made of cells. Contributed to the creation of the cell theory http://www.nndb.com/people/357/000096069/

21. Rudolph Virchow Born: October 13, 1821 Died: September 5, 1902 German pathologist He is known as the “Father of Pathology.” Discovered that all living cells come only from other living cells. http://en.wikipedia.org/wiki/Image:Rudolf_Virchow.jpg

22. The Cell Theory Major Contributors: Matthias Schleiden Theodor Schwann Rudolph Virchow

23. The Cell Theory 1.All living things are made of cells. 2.Cells are the basic units of structure and function in living things. 3.Living cells come only from other living cells. http://youtu.be/dscY_2QQbKU

24. Cellular Organelles Structures Cell Membrane Endoplasmic Reticulum Mitochondria Ribosomes Nucleus Golgi Apparatus or Body Lysosome Vacuole Cell Wall Chloroplast Functions Regulate what enters and exits the cell Where proteins are made and transported around the cell Converts food into energy Synthesizes or makes proteins Contains the DNA with the genetic blueprint to direct all the cell’s activities Packages and transports proteins Stores and digest cellular waste Stores water, food and waste Rigid layer surrounding and supporting a plant cell the givens a box-like shape Captures energy from sunlight and uses it to produce food for a plant cell

25. Cross Section of a Plant Cell Function of a plant cell is to produce it’s own food to carry the other functions of living things: grow, reproduce, move, synthesize

26. Cross Section of an Animal Cell The function of an animal is to convert food into energy to carry out life processes: grow, reproduce, synthesize, move.