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Some European alchemists in the middle ages apparently thought one possible reason was that there was gold in urine. This led to fruitless, and possibly quite disgusting, efforts to extract that gold.
The yellow color in urine is due to chemicals called urobilins. These are the breakdown products of the bile pigment bilirubin. Bilirubin is itself a breakdown product of the heme part of hemoglobin from worn-out red blood cells. Most bilirubin is partly broken down in the liver, stored in the gall bladder, broken down some more in the intestines, and excreted in the feces (its metabolites are what make feces brown), but some remains in the bloodstream to be extracted by the kidneys where, converted to urobilins, it gives urine that familiar yellow tint. (Here is a great diagram of some of these reactions, from the Boehringer Mannheim Biochemical Pathways at ExPASy.)
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Do ducks poo and wee and is their wee yellow?
i don't have a clue
What does the yellow stand for on the Guadeloupe flag?
the yellow stands for their wee :)
Why is your wee yellow?
Because you are dehydrated
What is boys wee wee?
boys wee wee is the same as girls wee wee it comes out there penis or vagina and it's yellow and smells. yer, boy urine is the same as girls and its not just yellow it depends on if that person has drunk lots of water if they have it will be clearer then if that person has no drank, and it does not smell we in fact it does if that person was bursting for a wee and does not go for ages.
Does your wee change colour when you are pregnant?
It shouldn't do! If your wee is really yellow it means you are not drinking enough water!
What can you drink and comes out the same colour as you drank it?
apple jucie because it is yellow and you wee out yellow pee
What is wee made of?
Wee is made up of an assortment of urine and stuff your body doesn't need. This usually comes out yellow. If you don't wee once in a day, you will get constipation. Good luck!
Do yellow jacket nests have two exits?
yes they do so they can poo and wee
Your wee is clear like water?
its yellow mellow if not uh oh gynee
How do you get yellow ribbons for us troops?
You have to soak it in wee and leave over night then the second day take out of the wee and leave until dry! simple! =-)
What are wee wee pads?
where you put the wee wee pads on your knickers and you wee wee into them its like a nappy
Why do they call a boy's wee wee a wee wee?
Eric Partridge records this in his A Dictionary of Slang,1937, as "Wee-wee, a urination; esp. do a wee-wee" and considers it to be late 19th century.
