Top new questions this week:
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I was a molecular biology major a while ago, but I never think I really understood cladistics TBH. Now reading about paraphyly, it shows this: In this phylogenetic tree [second image], the green …
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what is the mechanism of hypoxia in the electron transport chain? It stops because there’s no terminal electron acceptor so the IV complex become “stuck” with an electron? There’s no other …
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What are the possible methods to prevent the digestion of antibodies (mainly Polyclonal) by proteases during affinity chromatography? I read some papers about doing modifications to the anitbodies: …
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Since β-Adrenergic stimulation increases cellular uptake of potassium, this will reduce the plasma concentration of potassium. Thus, a more negative membrane voltage will arise as the potassium ions …
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I’ve seen some papers discuss extensively how human and chimp genomes compare in many of their features, eg Suntsova & Buzdin 2020, but I have not been able to find a paper that specifically …
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Is there a dilution threshold as a function of distance or some general measure regarding the area around a plant that is under the influence of its phytochemicals? I’m looking for a objective value …
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Greatest hits from previous weeks:
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Why do 60S & 40S subunits make an 80S (not 100S) ribosome and, similarly, 50S & 30S make 70S? 60+40 is not equal to 80, nor is 50+30 equal to 70, so why are the subunits of the 80S and 70S …
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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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At the end of mitosis, one cell has divided into two diploid cells. But at the end of meiosis I, there are two haploid cells. How are the two processes different to produce these two types of cells?
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Laughing gas (N2O), well, makes people laugh. How does just a gas make us do that, there has to be some hormones at work… So, I wanted to know how this works? What is the mechanism?
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During DNA replication, RNA primase puts an RNA primer in the lagging strand. What is the function of this RNA primer? Why can’t the enzymes put DNA fragments directly?
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I am in a 300-level molecular biology class and am unclear about this concept and how to delineate motifs versus domains of proteins. Any suggestions would be much obliged.
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What are 5′ and 3′ in DNA and RNA strands? Please clarify with some images and please use simple English.
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