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LEVELS OF CELLULAR ORGANIZATIONThursday, March 25th
THURSDAY, MARCH 25TH
AIM: What are the different levels of cellular organization?
Do NowWhat does multicellular mean?
Many CellsWhat do you think is more complicated?
Cells or Organs? Why? (2 sentences)Organs are more complicated than cells. An organ has many cells working together in order for it to work.
LEVELS OF CELLULAR ORGANIZATION
Work together to sort the cards at your table from smallest to biggest (2 minutes)
LEVELS OF CELLULAR ORGANIZATION
CELLS
TISSUES: Similar cells working together to do
the same functions/jobs.
ORGANS: Tissues work together to perform a specific activity
ORGAN SYSTEM: Two or more tissues working together to perform
a specific function/job for the organism
SMALL
BIG
HOW DOES OUR BODY WORK TOGETHER TO CIRCULATE BLOOD?
organelle
s work
togeth
er
inside…
HEARTCELLS
HEART TISSUES
The HEART(Organ)
CIRCULATORY SYSTEM
cells
work
togeth
er to
make
tissu
es work
togeth
er to
make
organs w
ork
togeth
er to
make
Organelles
CHALLENGE QUESTION
Why isn’t there cellular organization in unicellular organisms?
GROUP CHALLENGE GAME!
Who remembers the rules?
RULES:Work as a team to answer the questionsKeep your answers secret until time is calledNo talking while your answers are raisedNo cheering or booingTeam with the most points wins!
ARE YOU READY?
QUESTION 1
1. Which of the following is a unicellular organism?
a. humanc. bacteriab. lion d. tree
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.
QUESTION 3
3. Only eukaryotic cells have
a. DNA.c. ribosomes.b. membrane-bound organelles.
d. cytoplasm.
QUESTION 4
4. A structure within a cell that performs a specific function is called a(n)
a.organelle.b.tissue.c.organ tissue.d.biocenter.
QUESTION 5
5. Which cell structure controls most cell activities?
a. cytoplasm c. cell membrane
b. nucleus d. chloroplast
QUESTION 6
6. Organisms composed of more than one cell are called ____________.
a. unicellular c. multicellular
b. virus d. tissue
QUESTION 7
7. Which of these is a unicellular organism?
A B
C D
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.
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, cellsb. tissues, cells, organs, organ systemsc. cells, tissues, organ systems, organsd. cells, tissues, organs, organ systems
QUESTION 10
10. Which of the following lists an organism’s levels of cellular organization in order from SMALLEST to LARGEST?
a. tissues, cells, organ systems, organsb. cells, organs, tissues, organ systemsc. tissues, cells, organs, organ systemd. cells, tissues, organs, organ systems
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. speciesb. organ d. genius
ORGAN SYSTEM CELLTISSUE ORGAN
12. FILL IN THE LINE WITH THE APPROPRIATE LABEL FROM ABOVE!
Blood cell: _____________________Circulatory System: ________________Brain tissue: _________________________Heart: _______________________________