TOPIC: Cells
AIM: 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: Cells
AIM: 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 cell
Mighty 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 food
2. 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
Let’s Label!!!
L. mitochondria
M. Centrioles
K. Golgi Bodies
J. Nucleolus
I. Nuclear Mem.
H. chromosomes
G. nucleus
A. Cell membrane
B. Ribosome
F. lysosome
E. ER
C. cytoplasm
D. vacuole
3
7
4
8
2
5
6
1
8
7
A. Cell Wall
B. Cell Membrane
H. Ribosome
I. Chloroplast
C. Nucleus
D. Nuclear Mem
J. Cytoplasm
E. Chromosomes
K. Golgi Bodies
F. Nucleolus
L. Mitochondria
G. ER
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/anatom
y/cell/cell_quiz.htm
http://www.sheppardsoftware.com/health/anatom
y/cell/plant_cell_game.htm