Transcript Document

Tour de Cell
Goals of this lesson:
• 1. To understand the difference between
plant cells and animal cells.
• 2. To learn the names and jobs of all cell
organelles.
What are cells?
• Cells are the basic units of life.
• Every living thing is made up of
cells!
What do Cells look like?
These are animal cells.
What do Cells look like?
These are plant cells.
How many cells do you see here?
How Big Are Cells?
Click Here to see the size of cells
Diagram of Cells
The Zebra is made of trillions
of cells that work together.
Therefore the Zebra is a good
example of a Multicellular
Organism.
Unicellular Organisms
• Some living things have only ONE cell.
Living things with only one cell are called
unicellular organisms.
• Examples include:
Bacteria-
• Euglena (another unicellular organism)
Organelles
• What are organelles?
Organelles are small things that are
found inside of some cells.
• What do organelles do?
Organelles help the cell do all of its
important jobs.
What do organelles look like?
• Next, we are going to get a computer and
use the web to look more closely at plant
cells and animal cells.
Cells Alive Website
What types of cells do
we have in our bodies?
1. Blood Cells
There are three types of
cells found in human
blood:
*Red Blood Cells
(Red)
*White Blood Cells
(Purple)
*Platelets
(Blue)
2. Nerve Cells
3. Skin Cells
4. Muscle Cells
5. Bone Cells
6. Fat Cells
7. Stem Cells
Where are cells
made in the human
body?
Cells are made inside of our bones
in a substance called bone marrow.
What are cells made of?
How old do cells get?
The Organelles and
what they do:
The Nucleus
• The brain of the
cell. The nucleus
controls everything
that happens
within the cell.
The Golgi Body
The golgi bodies
receive materials
from the
endoplasmic
reticulum and send
them to other parts
of the cell. They also
release materials
outside of the cell.
Vacuoles
In animals, the
vacuoles store food,
water, wastes, and
other materials.
In plants, there is
usually one large
vacuole. This sac
stores water, food,
waste products, and
other materials.
Lysosome
Lysosomes break
down large food
particles into
smaller ones.
They also break
down and recycle
old cell parts.
Endoplasmic Reticulum
• The endoplasmic
reticulum is a maze of
passageways that carry
proteins from one part
of the cell to the other.
Mitochondrion
• The mitochondria
are the
“powerhouses” of
the cell because they
produce most of the
energy the cell
needs.
Cell Membrane
• The cell membrane is
the outside boundary
of a cell. It controls
what can enter or
leave the cell.
Ribosomes
• Ribosomes are
factories that
produce proteins.
The proteins are
then shipped to the
endoplasmic
reticulum.
Cytoplasm
• The cytoplasm is the
“soup” in which all the
organelles are floating.
Now lets look at plant
cell organelles:
Cell Wall
The cell wall is the
wall that surrounds
the cell membrane.
This wall gives
plants a stiff,
boxlike shape. Cell
walls protect and
support plant cells.
A closer look at the cell wall:
Chloroplasts
• Chloroplasts capture
energy from the sun
and use it to produce
food for the cell.
Here are the organelles
that are found inside
bacterial cells:
Flagellum
• This is a long,
whiplike structure that
helps unicellular
organisms move.