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Transcript
What do we know about
cells?
• We know that all living things
require cells
• Is there a relationship in terms
of size, shape, components?
• Seven different cells of various
cell types
In Lab book
• Purpose:
• Hypothesis
– Statement + because
• Materials and Method: See
Cellabration Handout
Data
• Picture of each cell type under
low and High Power
• Estimation of size
• Observations
– Shape
– Inside components
– Similarities between other cell
types
What did you discover in
the lab? In regards to:
• Similarities between cells
• Difference between cells
What did you discover in
the lab in regards to
• Cell Size
• Shape
What did you discover in
the lab in regards to
• The internal “circle”
All living things need
cells
• The organelles (or parts) of cells
allow the characteristics of life
to be met
• There are different types of cells
which meet these qualifications
in different ways
There are characteristics that we use
to group different cells with different
organelles.
• If cells do not have a nucleus
they are called Prokaryotic Cells
• If cells do have a nucleus they
are called Eukaryotic Cells.
The Nucleus
• Is the control Center of the cell. It is the
Boss and Brain.
• All genetic information is kept here thus
instructions for making proteins and other
necessities.
• It is often seen as a large Circle under the
microscope
Which of the slides do
you believe were
Eukaryotes?
• A.Clostridium botulinum and Bacillus
Cereua
• B.Elodea,Potato, Cheek Cell, Onion
Cell, Euglena
Animal Cells/ Plant Cells
are both Eukaryotes! As
well As Protists….
Bacteria is
not!
Animal Cells/ Plant Cells
have many things in
common
Mitochondria
• If a cell was a car, gas would be
created here!
• Allows the cell to use and maintain
energy
• Respiration occurs here. (Oxygen
added to proteins to create energy in
the form of ATP (energy!)
Ribosomes
• Make Proteins!
• Proteins do different things such a
• control the rate of reactions in the
cell
• regulate cell processes,
• form bones and muscles or transport
things in and out of the cell.
– Ex: Lactase allows your body to digest
milk
Endoplasmic Reticulum
• Allows cells to use and obtain
materials
• Channel or tube which materials
are transported through the cell
• Helps to make proteins and
Lipids
Vacuoles
• The storage closet!
• Maintains the correct pressure for the cell
in plants so that they don’t explode or burst
Some organelles are unique to
plant and Bacteria cells
• Cell Walls are present in plant and
bacteria cells for support
• They are like the walls of a house and
give the cells a rigid shape!
• Chloroplasts are unique to some plant
and bacteria cells to use energy from the
sun.
• Contain Clorophyll Gives Cells a
• Green color
Which of the Samples do
you believe were animal
cells?
Remember Animal Cells
have a less rigid shape/a nucleus/ no chloroplasts
•
•
•
•
A.
B.
C.
D.
Clostridium botulinum and Elodea
Cheek Cell
Bacillus Cereus and Euglena
Onion Cell
Which of the Samples do
you believe were plant
cells?
Remember Plant cells
have a rigid shape/a nucleus/ and sometimes
chloroplasts
A.Clostridium botulinum/ Cheek Cells
B.Elodea/Potato Cells/Onion Cells
C.Cheek Cell/Bacillus Cereus
D.Elodea/Euglena
Why would the
potato/Onion cells not
have chloroplasts?
A.It is not a plant cell
B.It is not a part of the plant that
photosynthesizes
C.I’m not sure
Do you think the
Euglena had
chloroplasts?
• A. Yes
• B. No
Bacteria Cells are unique! they are Prokaryotes
and have no Nucleus! They keep their DNA in the
nucleoid.
They have some things in common with plant
and animal cells to allow them to live
Other things are different
They move/Reproduce in unique
ways
• Some have Flagella to help them move- Like a whip
• They have a pilli which enables them to hook on to
other cells and reproduce.
• They have a capsule which they use for protection.
Which of the Samples do
you believe were
bacteria cells?
A.Clostridium botulinum/ BacillusCereus
B.Elodea/Potato
C.Cheek Cell/Euglena/Onion Cells
To recap:
• All cells are required for living things
• Animal/Plant cells are
Eukaryotes(Have Nucleus)
• Bacteria are not Eukaryotes
• All have some organelles in common
• All have some organelles that are
different
You are required to know that ones we
discussed in class
• You will create lyrics for a song, write a poem or
another creative activity approved by Miss H
• You will be graded by incorporating the important
organelles of the cell you choose and describe how
these organelles allow them to meet life processes
Creating a presentation which displays creativity and
care
• You will work in groups up of 4.
• Each member will receive the same grade