CELL LAB
HOW DID YOU DO???
I love cheek
cells!!
Magnification
Comparing Powers of Magnification
We can see better details with higher the
powers of magnification, but we cannot see
as much of the image.
A
Which of these images
would be viewed at a
higher power of
magnification?
B
Magnification
• To determine your magnification…you just
multiply the ocular lens by the objective
lens
Objective Lenses have
their magnification
written on them.
Ocular lenses usually magnifies by 10x
Magnification on OUR microscope
1. What is the magnification of OUR
ocular lens? 10x
2. What is the magnification of OUR low
power objective lens? 4x
3. Of our MEDIUM power? 10x
4. Of our HIGH power? 40x
Let’s Multiply the FUN!
• If you are looking at an object under
LOW power, what is the total
magnification of the microscope?
• Multiply the ocular lens (10x) by the
objective lens (4x) to get total
magnificiation.
• (10x) x (4x) = 40x
Your animal cells (cheek cells)
should have looked like this:
Based on the picture of the cheek cells,
please identify the following structure:
1.
2.
3.
4.
Cytoplasm
Cell membrane
Nucleus
Cell wall
A
The other parts you should have
labeled are as follows
cytoplasm
Cell Membrane
Based on the picture this is most
likely a(n)____:
1.
2.
3.
4.
Animal cell due to the nucleus
A onion cell due to the cytoplasm
A onion cell due to the cell wall
Animal cell due to the chloroplasts
I hope you recognized this as an onion
cell. Can you think of other ways you
could describe this cell?
Plant
Eukaryotic
The structure identified by the arrow is the:
1.
2.
3.
4.
Cell wall and nucleus
Cell wall and cell membrane
Cell membrane and cytoplasm
Cell wall and cytoplasm
Your elodea should have looked like the picture
below. As you can see, this cell has a nice green
color. What name is given to these green
organelles:
CHLOROP L A S T S
Can you think of two other ways you could
describe these elodea cells:
PLANT CELLS
EUKAROYTIC CELLS
Can you name the cell type at the
tip of the pointer?
Tooth Cell
I want
the
tooth!
You can’t
handle
the
tooth!
Mushroom cells are different
because they are in a different
KINGDOM…
Mycelium is a part of the
mushroom
Unfortunately, many of you may not have
been able to locate the bacteria in your
field of view. If you were successful, they
probably looked like this…..
OR
The difference in size between the
bacteria and other cells is similar to the
comparison in the drawing below…
PLANT CELLS
BACTERIA
Bacteria are…
1.
2.
3.
4.
Complex cells lacking a nucleus and organelles
Prokaryotic cells lacking a nucleus and organelles
Eukaryotic cells containing a nucleus
Prokaryotic cells with a nucleus but no organelles.
The following picture depicts what
type of cell?
33%
33%
33%
1. Bacteria
2. Plant
3. Animal
1.
2.
3.
The following picture depicts what
type of cell?
33%
33%
33%
1. Bacteria
2. Plant
3. Animal
1.
2.
3.
Animal cells have a cell wall.
1. True
2. False
50%
1.
50%
2.
Which component of the cell theory is
represented by the following diagram
1. All living things are made of cells
2. Cells are the basic unit of structure and
function
3. All cells come from pre-existing cells
4. Cells are either eukaryotic or prokaryotic