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Examples of real biological applications of the Keller-Segel system

I am working on a model of aggregation behavior modeled with the Keller-Segel PDE system. I recently gave a talk on this and was asked what other examples there were of the Keller-Segel system. Since this is an obvious question, I was embarrassed to have no example other than my model and the aggregation of […]

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What does γ mean before a gene name?

I am reading the following paper and I have come across the following statement: It has been demonstrated that the phosphorylation of histone H2AX-Ser139 to form γH2AX. I am not sure what the γ before the gene name H2AX means. Is γ used to indicate that H2AX is phosphorylated? Any insights are appreciated.

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Are the IRV and ERV equal in amount?

I am reading about Inspiratory Reserve Volume and Expiratory Reserve Volume in my textbook. So my general question is aren’t the two terms show the same amount of air ? I would like to tell you why I think so. Like IRV tells us about the maximum amount of air we can intake other than […]

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The position of the macula in comparison to the blind spot

See these two images and compare them: According to the first image, it seems that the macula is in a higher position than the blind spot. But when you look at the second image, there story is different. Unlike the first image the second image shows that the blind spot is in a higher position […]

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The position of the macula in comparison to the blind spot

See these two images and compare them: According to the first image, it seems that the macula is in a higher position than the blind spot. But when you look at the second image, there story is different. Unlike the first image the second image shows that the blind spot is in a higher position […]

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The position of the macula in comparison to the blind spot

See these two images and compare them: According to the first image, it seems that the macula is in a higher position than the blind spot. But when you look at the second image, there story is different. Unlike the first image the second image shows that the blind spot is in a higher position […]

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What stops myosin during muscle relaxation?

I understand that when the muscle is relaxed tropomyosin blocks myosin binding sites on actin filaments thereby preventing muscle contraction. What I am concerned with however, is whether myosin filaments – given that ATP is found in the muscle fiber- continue trying to bind to actin, and hydrolyzing ATP… So how are mysoin filaments stopped […]

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How many times did photosynthesis evolve?

Was it a 1 and done thing? Plants seem to have developed photosynthesis by the endosymbiosis of cyanobacteria. Is the latter the one time in Earth’s history that the process independently came about? Any answers would be greatly appreciated

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Can some bacteria be a host to flu virus helping him to survive before it starts attacking humans?

Sorry for very simple question but I am aware that it is very difficult to gather information that is part of somebody education like biochemistry.As I like physics this gave me some interests to this particular problem as virus spreading.

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Which fish did modern tetrapods descend from?

Did modern tetrapods descend from Tiktaalik or Ichthyostega? As far as I know, Ichthyostega and Tiktaalik have 10 million years between them, hence the question.