Introduction. The Urinary System is a group of organs in the body concerned with filtering out excess fluid and other substances from the bloodstream. The substances are filtered out from the body in the form of urine. Urine is a liquid produced by the kidneys, collected in the bladder and excreted through the urethra.ntroduction. The Urinary System is a group of organs in the body concerned with filtering out excess fluid and other substances from the bloodstream. The substances are filtered out from the body in the form of urine. Urine is a liquid produced by the kidneys, collected in the bladder and excreted through the urethra.
Concept 2: Transcription and Translation in Cells In a prokaryotic cell, transcription and translation are coupled; that is, translation begins while the mRNA is still being synthesized. In a eukaryotic cell, transcription occurs in the nucleus, and translation occurs in the cytoplasm.
What Happened Window : The RNA molecule you've just transcribed consists of nine bases. In a real cell, the RNA molecule would be anywhere from 100 to 10,000 bases long. An RNA molecule transcribed from DNA is called messenger RNA, or mRNA for short.The mRNA now moves away from the DNA and leaves the cell's nucleus. Outside the nucleus, ribosomes attach themselves to the RNA.