Top new questions this week:
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By doing a quick search in Google, I find a series of pages dedicated to physics exercises claiming that the human eye threshold for light intensity is $10^{-10}$ W/m${}^2$. However I cannot find any …
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I’m working on running simulations of human topoisomerase IIa. These are best done by starting with high resolution structures to ensure the system is as accurate as possible. However, no crystals …
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A quote from a review paper: ALDH7A1 gene (discovered in 2006), which is located at chromosome 5q32.2, contains a transcript of 4964 base pairs and 539 amino acids divided among 18 exons [1,10,16,17]….
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I understand that RNA needs to have 5′ cap and poly(A) tail to be recognised by eukaryotic ribosomes for translation. Some viruses are RNA based(like influenza and HIV). Does the RNA of these …
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In women when there are spermatozoons near to perform a fecundation, their egg cells emit some substances to attract the spermatozoons they “consider” would be a best match. Here a link for …
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I am trying to figure out what type of color vision mantises have, but stuff about mantis shrimp keeps coming up instead. All I was able to find was this one paper from 1971. It found evidence that …
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How come we can get an antibody response against a polysaccharide bound to a carrier protein, that we have antibodies towards, when antibody feedback inhibition exists? If we have antibodies against …
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Greatest hits from previous weeks:
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What are the I-IV blood type descriptions shown below (commonly used in Eastern Europe), and how do you translate them into the ABO-system?
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Which term is used to calculate water potential? Does osmotic potential mean the same as solute potential?
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I’ve heard it said various times that the body’s tissues will begin to necrotize after being cut off from the blood supply for only a few minutes, but that can’t be true. A few years ago, I woke up …
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On hot summer days, when I drink water to quench my thirst, my body immediately responds by sweating in 5 to 10 seconds or maybe less. How does our body detect the presence of water in the stomach so …
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DNA replication goes in the 5′ to 3′ direction because DNA polymerase acts on the 3′-OH of the existing strand for adding free nucleotides. Is there any biochemical reason why all organisms evolved to …
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Laplace law explains why the pressure is the same in aorta and arteries (100). I am thinking why there is so big drop in pressure when going from arteries to arterioles (40-60). Why there is a great …
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These three terms are often misused in the literature. Many researchers seem to treat them as synonyms. So, what is the definition of each of these terms and how do they differ from one another?
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Can you answer these questions?
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Can the human brain be in a state, in which its memory capacity is maxed out and where for every new information an old one is “deleted” or “forgotten”? Assuming a constant stream …
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As I understand, 2 ATP are consumed during steps 1 and 3 (glucose -> glucose-6-phosphate and fructose-6-phosphate -> fructose-1,6-bisphosphate) and then 4 ATP are produced during steps 6 and 9 (…
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What are the dental adaptations for eating mushrooms that are commonly found amongst fungivorous mammals?
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