final microscopy presentation 2 - educon21 - home CELL: 400x Fig. 2C - 400x One of the reasons that...
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Transcript of final microscopy presentation 2 - educon21 - home CELL: 400x Fig. 2C - 400x One of the reasons that...
MICROSCOPYPORTFOLIO
By:Natalie Sanchez & Elisa Hyder
Red Stream
ABSTRACTEvery cell has its own structure, shape and form.
Because of this, cells react to chemicals in different ways since their individual structure and make-up
determine whether each cell is permeable or selectively permeable. In this slideshow, you will see the different cells that we observed, how they look in different magnifications, and how their structures affect different chemical reactions. We hope you will
get a better understanding of cells and how they work after going through this presentation.
RED ONION CELL:40x & 100x
Fig. 1A - 40x Fig. 1B - 100x
nuclei
RED ONION CELL:400x
The two substances inside of the onion cell that gives it its shape are the vacuole and the chloroplast. The
vacuole is also responsible for containing and storing water for the cell. The chloroplast is the home of the chlorophyll - the part that gives the plant its pigment & absorbs light
energy. Fig. 1C - 400x
Nucleus
Nucleus
CHEEK CELL:40x & 100x
Fig. 2A - 40x Fig. 2B - 100x
CHEEK CELL:400x
Fig. 2C - 400x
One of the reasons that the cheek cells differ from onion cells is that the cheek cells are a type of animal
cells. Unlike plant cells, the vacuole of a cheek cell serves a different
purpose - storing waste - and it is also a different figure. Also, cheek
cells do not have chloroplast. Remember, a plant cell has a cell wall and a cell membrane and animal cells have only a cell membrane, which is usually more permeable than the cell
wall is.
mm GRID:40x, 100x, 400x
mm grid 40x mm grid 100x mm grid 400x
To calculate how many micrometers (µm) are in one millimeter (mm). The answer to that is 1000. When going from a larger unit to a small one (mm to µm), multiply the first unit by the difference between the two. So, to estimate amount of millimeters that is in
one piece of the grid and multiply it by 1000.
about 4,000 µm about 250 µm about 100 µm
SIZE COMPARISON
Fig. 1A - 40xRed Onion Cell
Fig. 2A - 40xCheek Cell
From our calculations, we have concluded that the Red Union
Cell at 40x is approximately 750 µm, and the Cheek Cell at 40x is
approximately 200 µm.
SIZE COMPARISON
While zooming in, because the field of view was getting closer and more focused on one area, we measured less µm because we only saw a small section of the original
images caught at 40x. We measured more µm in the image of the onion cells taken at 40x because we were looking at the entire cell from a more distant view. That
is why as we measured the cells at a stronger magnitude, we measured less µm. To actually find the
amount of µm in the images we had to take the estimated number of mm in the images and multiply it
by 1,000 since there are 1,000 µm in one mm.
RED ONION CELL:100XBefore & After NaCl
Fig. 1B - 100x Fig. 3A - 100x NaCl
cell wall nucleus
cell wallnucleus
Nucleus Cell Wall
RED ONION CELL:400XBefore & After NaCl
Fig 1C - 400x Fig 3B - 400x NaCl
Nucleus Cell Wall Cell Wall
NaClEXPLANATION
The substances in a plant cell have a type of equilibrium to them. When a new substance is introduced, the cell balances it out. Plant cells also undergo a process called osmosis. During this process, water diffuses across a selectively permeable cell.
So, when the new substance was added under the cover slip, the amount of water inside the cell and the amount outside of the
cell became unbalanced. So, the cell underwent osmosis in order to allow water to pass through it. Because of the salt inside the water, salt also passed and spread throughout the membrane. We have concluded that the salt continued to absorb water already inside the cell, causing it to shrivel. That’s why the cell
membrane is pushing in, to protect the water.
MARINE CILIATES
QUESTION:
What are the smaller figures/substances we are able to see inside of the
marine ciliate?
Marine ciliates 400x
Example of figures in question
MARINE CILIATES
We both thought differently when it came to assuming what the tiny
organisms are. One of us thought that the little organisms were the ciliates that
made up a whole bunch of ciliates because we found out, from further
research that marine ciliates actually live in colonies. The other thought that the
little organisms were actually the ciliate’s cells, which is possible because ciliates
are single celled organisms.
Answer:
DIPLOCOCCUSPNEUMONIAE
QUESTION:
What harm can this bacterium do?
Diplococcus pneumoniae 400x
DIPLOCOCCUSPNEUMONIAE
Answer:
• Diplococcus pneumoniae is a type of bacteria that causes pneumonia in mice and humans. Diplococcus pneumoniae is also connected and may make humans
more susceptible to pneumonia, meningitis, and other bacteria-caused
diseases.
ACKNOWLEDGEMENTS
•Elisa Hyder
•Natalie Sanchez
•Gamal Sherif
•Kenny Rochester
•Newon Dennis