Top new questions this week:
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I thought the EDTA solution binds to metal ions and deactivates the (metal-dependent) nuclease present in the cytoplasm which protects DNA from degradation. But I wondered how that would be the case …
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I’ve recently watched two presentations on YouTube (this and this) about Akkermansia municiphila, a commensal bacteria that feeds on the mucus of the gut. What I find confusing is their claim about …
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We are planning to screen soil, water, and biofilm for mycobacteriophages, particularly the environments where the bacteria have been found in the past. We have already isolated phages from soil but …
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LacZ (beta-galacosidase) catalyzes the hydrolysis of lactose into either galactose and glucose or allolactose. Is there a term to designate such property for a single enzyme of catalysing several …
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I’m using a custom library of ssDNA oligos to test the performance of some qPCR assays with mismatched bases in various primer and probe regions, and I’m trying to come up with a good way to verify …
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If crossing over did not occur, would there be two pairs of cells with the same chromosomes after meiosis II? This question came to my mind while I was reading through my bio textbook. After meiosis I,…
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I am currently working on an image cytometer that could automatically count somatic cells in milk samples. Can I use Calcein (i.e., C30H26N2O13) to stain the somatic cells? If not, what dye can I use …
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Greatest hits from previous weeks:
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I was wondering what organelles are in an onion cell, because, based on the labs we are doing in my biology class, I only saw a nucleus and cell wall. My friends and brother say there are all the …
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I have heard that offspring can’t grow taller than either of their parents but I’ve also heard that sometimes some gene activation can skip generations. Is it possible for a child to grow taller than …
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I’ve been reading a lot about the oxidative dissimilation etc, and often I see different sources use NADH and NADH2 in the same reactions. One source uses NADH and another uses NADH2 in the exact same …
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How does the digestive acid (HCl) not burn the surrounding membrane of our stomach? It digests the majority of raw food we eat but how does it stay safely in our stomach? Also, how does the stomach …
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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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Some vegans claim that humans are herbivores, not omnivores, and that we are not physiologically designed to eat meat (see here: www.peta.org/living/food/natural-human-diet/). “According to …
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Today while cooking with potatoes when I cut open a potato(raw) which was looking perfect from the outside showed purple veins. I threw it in my kitchen garden but than I wondered what it could be …
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Can you answer this question?
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From what I understand, elevated CO2 levels decrease the stomatal conductance of water in plants. What I remember from irrigation sciences, higher temperatures should be more demanding on …
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