Stealth Mosquitoes? - Biology Stack Exchange
Aug 26, 2024 · Have mosquitoes become silent and invisible, or am I losing my senses of hearing and sight? This summer I have seen no mosquitoes and have only heard two of them, very quiet, as I sat …
Newest 'sex' Questions - Biology Stack Exchange
May 20, 2025 · Questions involving the study of sex and reproduction, mating systems, sexuality, sex determination, gender, the evolution of sex, and other topics in the context of sex.
Phosphorylation of glucose in glycolysis - Biology Stack Exchange
Jul 26, 2025 · In the first step of glycolysis, the glucose ring is phosphorylated. Phosphorylation is the process of adding a phosphate group to a molecule derived from ATP. As a result, at this point in …
Why do blood vessels in the eye not obstruct vision?
Mar 31, 2022 · To follow-up for clarity: I understand the brain is essentially integrating the overlapping visual fields from both eyes to allow us not to regularly perceive the blind spot. However, it seems …
metabolism - Why are 6 turns of the Calvin cycle needed to make one ...
Oct 6, 2021 · I‘ve read that 6 turns of the Calvin cycle are required to make 1 glucose molecule. But, 3CO 2 and 3RuBP are used in one cycle and 6 triose phosphate is produced. Only 5 triose …
Why is arterial pO2 normal in carbon monoxide poisoning?
Jan 30, 2020 · Arterial blood gas measurements often show that pO2 is 'normal' even though haemoglobin is bound to carbon monoxide with high affinity. Is this because there is still oxygen …
Problems understanding membrane potential - Biology Stack Exchange
Apr 13, 2017 · I understand that membrane potential is the difference of the extracellular and intracellular ionic charges, due to their concentrations. We say that the extracellular space has a …
Absorption ratios 260/280 and 260/230 for RNA
Aug 2, 2012 · DNA and RNA absorb at 260nm. Proteins absorb at 280nm. The 260/280 ratio is a good estimate of how pure your sample is. For RNA, the 260/280 should be around 2. If it is lower, this …
How do membrane proteins find their target locations?
Nov 25, 2017 · The question might be asked for any kind of "bound" proteins, but I'd like to restrict it to membrane proteins. Assuming membrane proteins (or their main parts) don't (or aren't) build in situ …
Why isn't the resting membrane potential at equilibrium?
Jul 28, 2022 · What I'm curious about is why potassium just leaves the cell without forming an electric gradient (by leaving behind anions) when sodium starts flowing in. Wouldn't potassium eventually be …