1. Biology Unit Unit C: From Life to Lifestyle
Science 14 and 10-4 with Mrs M

2. Biology Unit C: Life to Lifestyle
Chapter 8: Structure and Function of Plant and Animal Cells
Chapter 9:
Life Functions Common to Living Things
Chapter 10:
Food for Life
Chapter 11:
Maintaining Homeostasis
(with Mr. Watts)

3. 8.1 A Closer Look at Cells
We will be looking at the question: How do cells, which are microscopic and invisible to the naked eye, work together in organs and organ systems to carry out life functions?

4. Microscope
A microscope is an optical instrument used for viewing small objects
Red blood cells

5. Compound Microscope
Uses light

6. Preparing a slide Materials: glass slide medicine dropper slip cover
tweezers

7. Compound Microscope
Uses light

8. Binocular = 2 eyepieces Monocular = 1 eyepiece

10. Objective Lenses: As you increase the magnification the specimen appears larger
4x 10x 40x x

12. Magnification

15. Electron Microscope
Uses beam of electrons

16. Electron Microscope
Uses beam of electrons

17. 2 types of Electron Microscope
1. TEM: transmission electron microscope
Focuses a beam of electrons at a very thin slice of the object under study
Object is covered in chemicals and is placed in the vacuum-sealed part of the microscope
Specimen must be dead to observe it

18. TEM: high resolution (1nm) Bacteria

19. Electron Microscope 2. SEM: scanning electron microscope
Beam of electrons is passed over the specimen being observed
Creates a 3D image on the computer screen
Can examine living things

20. SEM

21. ‪The World's Most Powerful Microscope - KQED QUEST‬
The hidden world around us documentary

22. 8.2 Cell Theory

24. Living or Non-living? Examples of living things: Non-living things:
Viruses, bacteria, insects, plants, animals
Non-living things:
Ice grows, is it living?
Rocks can be moved, are they living?
It is living if it:
Grows
Reproduces
Moves or has transportation

25. Organelles: little “organs” or parts inside cells
Cell: Smallest unit of life
Tissues: cells combined to work together
Organ: combined tissues to perform specialized task
Systems: like respiratory, cardiac, digestive systems
Organism: living multi-cellular being

26. Cell Theory All living things are made up of cells
Cells are responsible for structure and function
All cells are reproduced from other living cells

27. 8.3 Plant and Animal Cell Structures

28. Animal Cell

29. Animal Cell

30. 8.4 Cell City

31. Cell as a hockey rink analogy
Boards = Cell membrane keep crazy fans or bad bacteria out
Ribosomes=
Little red face off dots
Tiny protein-making
factory
Mitochondria =
Power Play Forwards
Lysosome:
Net where pucks
disappear
Referee = Nucleus
Puck = Nutrients
and messengers
passed around
Cytoplasm = Ice

32. review
Key terms: microscope (compound and electron), cell, organelle, living, nonliving, tissue, organ, system, nucleus, mitochondrion, cytoplasm, cell membrane, cell wall, chloroplast
3ab, 6, 8, 10, 11