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: _______________________________