First off, here is a link to a video that shows the chloroplasts moving inside of the elodea leaf cells.
Cytoplasmic Streaming
Additionally, here is a micrograph from when we looked at the elodea leaf cells on Tuesday.
What components of the cell theory were visible in the leaf?
The part of the cell theory that you can really see in the video and the micrograph is that, as it states on page 156 of BSCS Biology: A Molecular Approach Ninth Edition, "Cells or products made by the cells, are the units of structure and function in organisms."
When I first looked into our microscope and saw these images, I could not help but be astounded by how each cell fits together perfectly, creating the stability and structure that most plants have. It was super easy to see this due to the visible cell walls that set themselves apart by being extremely obvious to see.
Something else that really stands out to me when I look at an image of these cells is how easy it is to hypothesize that the cells are filled with liquid (cytosol). I can tell that there is liquid inside of the cell because it is super easy for the chloroplasts to move and transport themselves from one spot to another.
Finally, the last big thing that is easy to tell by looking at these images is that there is a central vacuole. We can tell that there is one in each of the cells because it is easy to notice that there are no chloroplasts in the middle of the cell. Instead they are pushed to the edges and are restricted to only moving near the cell wall.
In conclusion, we can really learn a lot about cells by simply looking at them with a microscope and I look forward to being able to look further into cells.
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