Recent content by jim mcnamara

I'm pretty sure you would never survive consuming anything synthesized from Polonium, the KGB's favorite assassination tool. A small speck on a dinner plate does the job. In the same vein: Did you know that https://www.rsc.org/periodic-table/element/89/actinium glows blue in the dark because...

Two links: #1 Ben-David, Joseph; Teresa A. Sullivan (1975). "Sociology of Science". Annual Review of Sociology. 1 (1): 203–222. doi:10.1146/annurev.so.01.080175.001223. Retrieved 2006-11-29. A compendium of papers some of which may be of help. #2 Stocking, Holly (1998). "On Drawing...

See: https://www.massgeneralbrigham.org/en/about/newsroom/press-releases/multivitamins-improve-memory-and-slow-cognitive-aging This is the third such large study to make this assertion. One could now ask the question: why does vitamin & mineral supplementation prevent dementia in first world...

From Science: https://www.science.org/doi/10.1126/science.ade0664

How about Poliosis? example: Poliosis conscripta - a white forelock usually seen in women https://pubmed.ncbi.nlm.nih.gov/23850259/ I really think the issue is someone trying hard to post a question in English when it is not a first language.

FWIW: Long COVID is one of the dumbed down names for 'post Covid sequelae' - so you can see why they renamed it to something non-medical people can deal with. Long COVID is symptoms -often unlike what the patient experienced earlier -- and disease processes that appear well after first...

The takeaway from this post is that human DNA is a friggin mess. Evolution ate our simplistic lunch it seems. There is a designation for "unused" DNA in a genome - introns. Introns do not do much. They are junk. Our genome has only about 30K genes. Turns out this is wrong. It is...

DNA is not just a simple strand of letters (aka nucleotides). @Hill nice post is correct. I taught human genetics to med students a looong time ago and this kind of question was almost always asked. There is some things that would answer your question as "Probably not - ", for ethical reasons...

To be clear - yes 9 AA are essential. What that means is 11 AA's can be synthesized and turned into proteins. Usually they are synthesized from a mix other AA's, some essential some not essential.

Think of cooking as pre-digestion. For our size, humans have relatively tiny teeth, and a small digestive tract. Humans who cooked had a huge advantage over other primates in terms of killing food pathogens and parasites like tapeworms. Cooking kills of most bacteria, for example. I'm not...

This needs a dose of biochemistry (and basic chemistry) of pectin. Pectin holds plant cells together --middle lamella -- , so it is primarily responsible for the toughness level of unripened or uncooked fruit or stems or roots. See: https://en.wikipedia.org/wiki/Pectin Plant...

Lets inject some basic biology. pathogens are organisms that cause illness and death (pathology). Transmissions: Vectors transmit pathogens Transmission of pathogens across species is called zoonosis. There are more than 20 mammal species that broke out/ or can break out from humans...

Thread moved to Chemistry.

It is okay. It is very likely that everyone reading this thread consumes it daily because it is used extensively in tiny amounts by food manufacturers as a high power flavor enhancer for orange juice, and for most fruit fillings for pies, pastries, soft drinks and candies. I think it is on...

?:)This thread keeps getting worse, despite the efforts of folks with good understanding. It is now locked. The implied question is "why don't fungi just start growing everywhere after long periods of rainfall?" Answer: https://en.wikipedia.org/wiki/Ecological_succession Part 1: they try to...