If a freshly voided urine sample contains excessive amounts of urochrome, it has a. an ammonia-like odor, b. a pH below normal, c. a dark yellow color, d. a pH above normal.

Video transcript

Hi, everybody. Our next question says which of the following pigments is mainly responsible for the yellow color of the urine? Arico Bein B Euro Chrome, C, Billy Verden or D, Billy Rubin. Well, our answer here is going to be choice B Euro chrome, euro chrome is also known as Euro Bill. They're the same thing. So in case you encounter that and it is produced by the degradation of heme in the blood. And to look at our other answer, choices, see why they're not correct and where they come in. Let's just look at that pathway from him to the Euro Bellen or Uch Fromme in the urine. So he gets broken down into iron and a protein called or excuse me, a pigment called Billy Verdin. It has a green color as you can maybe see by that root of verd in there. And you can see that's our choice. C so not our answer that Billy Verdin gets converted to Billy Rubin. What you see is our choice D right there. And the Billy Rubin is excreted in the bio and that goes into the uh intestines with digestion and in the large intestine, it gets converted by bacteria to the urobilinogen molecule. At this point, it has two separate path. Some of the herba ingen stays in the intestine where it's converted to rico beon. Another pigment and rico bein actually is what gives the brown color to feces. So it gets eliminated with feces in that pathway. Some of it is reabsorbed into the bloodstream and goes to the kidneys from the kidneys. It gets excreted in the urine and there it is oxidized to chrome or urobilin when it's exposed to air. So we see that our chrome is one of the end products of this breakdown of hem. The other is the ST Cobin sort of by these two alternate pathways. But that's why choice a stir Bellon isn't our answer. And then as we saw Choice C, Billy Vernon and Choice D, Billy Rubin are earlier products along this pathway. So the yellow color of the urine is choice B Euro chrome or as we said, Euro billion. See you in the next video.