TOPIC: CellsAIM: Describe the different cell

organelles and their functions.

Do Now: Explain what all living cells are made up of.

HW: Read p. 39. Write a paragraph describing the two types of cells that exist.

Cell Membrane

“SECURITY GUARD”

Cell membranes are like gates.

•Plasma Membrane•Surrounds the cell

•Semi-permeable or Selectively permeable: controls what enters & leaves the cell

•Made of a bilayer of lipids with proteins

Cytoplasm

Cytoplasm is the gelatin-like material that is found inside the cell membrane.

•Jellylike material

•Holds cell organelles

Nucleus

“BRAIN” of the cell(Control center of the

cell)

•Controls all cell activities•Stores hereditary information (DNA)

•Nucleolus: produces ribosomes

•Surrounded by the nuclear membrane

Nucleus of a Mouse Spleen Cell

Onion Cells

Cheek Cell

Ribosomes

•Produce proteins

•Found–Floating free in cytoplasm

–on Endoplasmic Reticulum

Endoplasmic Reticulum (ER)

Nucleus

“HIGHWAY OF THE CELL”

•Channels in the cytoplasm

•Used to TRANSPORT materials

•2 types of ER:

1.Rough ER: ribosomes on surface

2.Smooth ER: no ribosomes on surface

Rough ER

Smooth ER

TOPIC: CellsAIM: Describe the different cell

organelles and their functions.

Do Now: Take out your notes packet. You will be using the space under the Endoplasmic reticulum box. Write out numbers 1 – 10.

HW: Work on your science fair project!

Identify the cell organelle described:

1.Controls all cell activities.

2.Made up of a bilayer of lipids and proteins.

3.Produces proteins.

4.Is selectively permeable.

5.Transports substances around the cell.

6. Produces ribosomes.

7. Has ribosomes on its surface.

8. Holds all cell organelles.

9. Contains DNA.

10. Controls what enters and leaves the cell.

Mitochondria

“POWERHOUSE” of the cellMighty Mitochondria

•Where ENERGY is produced (cell respiration)

ATP

Vacuoles

•Stores materials (food, water, wastes…)

•Animal = many small •Plant = few large

Golgi Bodies

When a protein is made in the ER, something called a vesicle is made. This vesicle or sac floats through the cytoplasm to the Golgi apparatus and is absorbed. After the Golgi does its work on the molecules inside the sac, a secretory vesicle is created and released into the cytoplasm. From there, the vesicle moves to the cell membrane and the molecules are released out of the cell.

“UPS / POST OFFICE”• Collects, packages, and

sends materials out of the cell

Lysosome

•Contain digestive enzymes that:

1. digest food2. break down old organelles & bacteria

Organelles found only in Animal Cells

•Centrioles: used for cell division

Organelles found only in Plant Cells

CELL WALL

Cell Membrane

1.Cell Wall: • Outer wall of plant cell• Gives cell shape and

support• RIGID

2. Chloroplasts:•Carry out photosynthesis•Contain green pigment called

chlorophyll

L. mitochondria

A. Cell membrane

B. Ribosome

C. cytoplasm D. vacuole

E. ER

F. lysosome

G. nucleus

H. chromosomes

I. Nuclear Mem.

J. Nucleolus

K. Golgi BodiesM. CentriolesLet’s Label!!!

1

2

34

5

6

7

8

78

A. Cell Wall

B. Cell Membrane

C. Nucleus

D. Nuclear Mem

E. Chromosomes

G. ER

F. Nucleolus

H. Ribosome

I. Chloroplast

J. Cytoplasm

K. Golgi Bodies

L. Mitochondria

M. Vacuole

E

Review:

1. Which structure composed mainly of proteins and lipids, aids in maintaining homeostasis in the cell?

(1.) chromosome (2.) nucleolus

(3.) cell membrane (4.) cell wall

2. In which organelle would water and dissolved minerals be stored?

(1.) vacuole (2.) lysosome

(3.) nucleus (4.) ribosome

3. The rigidity (support) of a plant cell is due primarily to the presence of the (1.) DNA (2.) cell membrane

(3.) cell wall (4.) lysosomes

4. The structure most closely associated with the destruction of worn out cell organelles is the

(1.) lysosome

(2.) vacuole

(3.) golgi apparatus

(4.) chromosome

5. Which structure is found ONLY in animal cells?

(1.) cell wall (2.) vacuoles

(3.) centrioles (4.) ribosomes

6. The organelle most closely associated with the manufacture of proteins within the cell is the

(1.) ribosome (2.) lysosome

(3.) nucleolus (4.) cell membrane

7. Which structure chiefly functions in intracellular transport?

(1.) vacuole

(2.) mitochondrion

(3.) golgi apparatus

(4.) endoplasmic reticulum

8. The cell wall is

(1.) selectively permeable

(2.) rigid

(3.) living

(4.) a hardened cell membrane

9. Cyanide, a metabolic poison, interferes with the production of energy. Which cell organelle does cyanide most directly influence first in this situation?

(1.) nucleus (2.) lysosome

(3.) mitochondria (4.) ribosomes

10. The structure that is known as the control center of the cell is the

(1.) vacuole (2.) cell membrane

(3.) lysosome (4.) nucleus

http://www.harcourtschool.com/activity/cell/cell.html

http://www.sheppardsoftware.com/health/anatomy/cell/cell_quiz.htm

http://www.sheppardsoftware.com/health/anatomy/cell/plant_cell_game.htm