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Results tagged with cell-biology
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user 540
The study of cells and their physiological properties, structure, environmental interaction, division, life cycle, and death, as well as the organelles they contain. Also known as cytology.
5
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2
answers
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What percentage of a cell's volume is occupied by protein?
I was looking at one of David Goodsell's illustrations of a cell:
And it seems to suggest a very crowded picture of the intracellular environment. Just how crowded are cytoplasms? What percentage o …
- 4,540
1
vote
How many centrioles/basal bodies are there in multi-ciliated cells throughout the cell cycle?
It seems that there is one basal body per cilium in multiciliated cells. Centriole duplication (as far as I understand, a basal body is just a different name for a centriole that is attached to a cili …
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1
vote
How do penicillin resistant bacteria grow slower in the presence of penicillin?
Your hypothesis is incorrect.
You must be assuming that lactamase destroys the antibiotic with perfect efficiency. This is incorrect.
You must be assuming that the population will remain genetically …
- 4,540
5
votes
3
answers
3k
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Does trypsin strip flask coating?
Mammalian cell/tissue cultures sometimes require flasks coated with proteins. My uneducated guess is that these proteins mimic the ECM, perhaps the basal lamina, so finicky contact-dependent cells can …
- 4,540
2
votes
1
answer
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What cells don't have a primary cilium?
It is often stated that most cells in the human body have a primary cilium.
Which ones don't? For which cells is it unknown?
- 4,540
3
votes
Cancer growth and cell division
There is a wide continuum from "cancer" in the sense of uncontrolled cell division (this could include even things like 2-3 extra cells making an imperceptible, microscopic bulge in your colon) to can …
- 4,540
12
votes
Accepted
Can I kill bacteria with distilled water?
Indeed, bacteria are susceptible to osmotic stress from being in pure water. They are also susceptible to starvation in such an environment.
However, wild bacteria tend to have many mechanisms that p …
- 4,540