1. LS.3 Cellular Organization
The student will investigate and understand that living things show patterns of cellular organization.

2. LS.3 Cellular Organization, Functions & Processes
Unicellular – only one cell carries out all work
Multicellular- 2 or more cells share work
Functions & Processes- shape of cell can show you what its function is.
Respiration
Growth
Cellular Transport

3. Shape & Function go Together!!!
The Shape of a Cell can Tell You What its Function Is!!!

5. Unicellular vs. Multicellular
Bacteria, Fungi, Protist= yeast, diatoms, archaebacteria
Multicellular
Animals, Plants, some Fungi, some Protist

6. Cellular Organization
Cells
Smallest part of every living thing

7. Cellular Organization
Tissue
Similar cells working together
4 major tissue types in animals
Epithelial tissue
Connective tissue
Muscle tissue
Nervous tissue

8. Cellular Organization
Groups of tissues working together to do a specific job
Ex.
Heart, lungs, stomach

9. Cellular Organization
Organ system
Organs working together to do a specific job
Examples:
Digestive system
Circulatory system
Respiratory system
Nervous system
Muscular system
Skeletal system
Integumentary system (skin)
Vascular system in plants

10. Cellular Organization
Organism
A living thing made up of organ systems working together
Examples:
A single person
A single plant
A single bacterium
A single protist

11. Cellular Organization
Place the levels of cellular organization in order from largest to smallest.

12. HOW DOES OUR BODY WORK TOGETHER TO CIRCULATE BLOOD?
organs work together to make
HOW DOES OUR BODY WORK TOGETHER TO CIRCULATE BLOOD?
CIRCULATORY SYSTEM
tissues work together to make
The HEART
(Organ)
cells work together to make
HEART TISSUES
organelles work together inside…
HEART
CELLS
Organelles

13. Ex. Of Cellular Organization
Bone cells
Bone Tissue
Bone
Human
Skeletal System

14. GROUP CHALLENGE GAME! Who remembers the rules? RULES:
Work as a team to answer the questions
Keep your answers secret until time is called
No talking while your answers are raised
No cheering or booing
Team with the most points wins!
ARE YOU READY?

15. 1. Which of the following is a unicellular organism?
QUESTION 1
1. Which of the following is a unicellular organism?
a. human c. bacteria
b. lion d. tree

16. QUESTION 2
2. The structure that regulates what enters and leaves the cell is called
a. the nucleus.
b. the nuclear membrane.
c. the cell wall.
d. the cell membrane.

17. QUESTION 3 3. Only eukaryotic cells have a. DNA. c. ribosomes.
b. membrane-bound organelles.
d. cytoplasm.

18. QUESTION 4
4. A structure within a cell that performs a specific function is called a(n)
organelle.
tissue.
organ tissue.
biocenter.

19. QUESTION 5 5. Which cell structure controls most cell activities?
a. cytoplasm c. cell membrane
b. nucleus d. chloroplast

20. QUESTION 6
6. Organisms composed of more than one cell are called ____________.
a. unicellular c. multicellular
b. virus d. tissue

21. QUESTION 7
7. Which of these is a unicellular organism? A B C D

22. QUESTION 8
8. Multicellular organisms are made up of more than one kind of cell because:
a. unicellular organisms can’t move so don’t need lots of cells.
b. multicellular organisms are more complex than unicellular organisms and need different cells for different functions.
c. unicellular organisms don’t do all the seven things living things do.
d. multicellular organisms don’t get energy.

23. QUESTION 9
9. Which of the following is the correct order of organization of structures in living things, from simplest to most complex?
a. organ systems, organs, tissues, cells
b. tissues, cells, organs, organ systems
c. cells, tissues, organ systems, organs
d. cells, tissues, organs, organ systems

24. QUESTION 10 b. cells, organs, tissues, organ systems
10. Which of the following lists an organism’s levels of cellular organization in order from SMALLEST to LARGEST?
a. tissues, cells, organ systems, organs
b. cells, organs, tissues, organ systems
c. tissues, cells, organs, organ system
d. cells, tissues, organs, organ systems

25. QUESTION 11
11. What is the name for a group of cells that work together to perform a certain task in an organism?
a. tissue c. species
b. organ d. genius

26. Snapshot
Write cellular organization in order from smallest to largest.
Tissues are made up of ___________.
The nervous system is made up of the brain, which is a ____________.

27. Cellular Transport Moving things in and out of cell
Water, nutrients, carbon dioxide
2 Types
Passive
Does not use energy
Active
Uses energy.

28. Passive Cellular Transport
Transporting substances in and out of the cell without using energy
Diffusion– movement from areas of high concentration to areas of low concentration
Lot to little
Ex. O2, & CO2,

29. Semi-permeable membrane is permeable to water, but not to sugar
Osmosis—Diffusion of water across a membrane
Water diffuses across a membrane from an area of high concentration to an area of low concentration.
Types of Diffusion
Semi-permeable membrane is permeable to water, but not to sugar

32. ANALOGY: Tossing a Ball on a Hill
NO ENERGY NEEDED:
Diffusion
Osmosis
Facilitated Diffusion
ENERGY NEEDED:
Active Transport

34. Osmosis—Elodea Leaf

35. Snapshot Diffusion is the movement of substances from ___.
The diffusion of water across a membrane is called ______________.
Cellular transport that does not require energy is called _____________________.
Which way would the salt move in the cell below

36. Functions & Processes: Growth– getting bigger
Unicellular
Multicellular
Multicellular – increase in number of cells
Ex. Making more muscle cells
One cell increases in size
Ex. Bacterium grows larger

37. Cellular Processes– Asexual Reproduction
Asexual- new organism (offspring) made from one organism( identical to parent)
Unicellular Organisms
Cell divides to create new offspring by itself.
Examples: Fission & Mitosis
Multicellular
Organism creates new offspring by itself
Ex. Cell division & Budding–
Organism grows off of parent

38. Cellular Processes– Sexual Reproduction
Two organisms combine genetic material (DNA) to create new offspring
Half DNA of each parent.
Ex. Unicellular Protist undergo Meiosis & fertilization
Ex. Apple tree being fertilized from pollen of a different apple tree using Meiosis & Fertilization

39. Cellular Processes– Digestion
Digestion– breaking food down into small molecules & nutrients cells can absorb
Ex.. H2O, C6H12O6 or Carbohydrates, Lipids, Proteins, Nucleic acids
Unicellular
Use organelles to break down substances
Multicellular uses organ systems to break down substances
Digestion

40. Cellular Processes– Waste Removal
Excretion- removal of waste products from an organism or cell
Unicellular
Use organelles to remove substances
Ex. Golgi Bodies & cell membrane
Multicellular
Uses organ systems to remove waste
Ex. Breathing out CO2
Excretion

41. Cellular Processes Foldable
Create a foldable with 5flaps
Describe the process in your words
Draw a picture for each
Growth
Digestion
Cellular Processes
Excretion
Asexual Reproduction
Sexual Reproduction

42. Cellular Processes Group Poster
Within your group
Create a poster on the cell process that your group drew
Write a description
Draw a picture
Give an example using a real organism
Present the poster to the class– everyone in the group must participate.

43. Snapshot What are the five cellular processes?
Which involves creating new offspring with one set of genetic material?
Breaking down a sugar cookie into glucose and other nutrients is an example of __________.

44. 2 Types of Respiration: process cells use to break down food and make energy
Aerobic
Anaerobic
w/ Oxygen (air)
Combine oxygen & glucose (sugar)
Create water, carbon dioxide, & energy (ATP)
Fermentation- without Oxygen
Creates little bit of energy but hurts organism
End products = lactic acid, alcohol, & carbon dioxide
Ex. Muscle Cramps

45. Photosynthesis Process organisms use to make food
Combine carbon dioxide and water to make sugar and oxygen
Plants use it to make food
Happens inside chloroplast
Creates oxygen and sugar that we need for respiration
Reactants= Carbon dioxide & water
Products= glucose and oxygen

46. Photosynthesis vs Respiration
Water + Carbon dioxide + energy (from sun) -> Oxygen + sugar
6H2O + 6CO2 + energy -> 6O2 + C6H12O6
Respiration
Oxygen + sugar -> Water + Carbon dioxide + energy (ATP)
6O2 + C6H12O6 -> 6H2O + 6CO2 + energy

48. Snapshot What are the reactants of photosynthesis?
Where in the cell does photosynthesis take place?
Which type of respiration is the best?
Respiration is used to create ________ for living things.
Respiration occurs inside of the __________.
Write out the equation for respiration.
Circle the reactants and draw a box around the products.

49. Test Today Hooray!!!!
Review Notes!!

50. Vocabulary Terms– define the following vocabulary terms following the example given.
Digestion
Energy
Excretion
Growth
Organ
Photosynthesis
Reproduction
Respiration
System
Tissue
Osmosis
Diffusion
Active transport

51. Journal:
Which part of LS.3 do you understand the most? Which part of LS.3 still confuses you? Why do you feel that way? What do you think could help you?