Therefore, whenever a ddNTP is added to a growing DNA strand, it is unable to chemically bind with the next nucleotide in the chain, and the DNA strand stops growing. Figure 3: By adding together information about all of the truncated strands, researchers can determine the nucleotide sequence of the DNA target.
Functions of the Bladder. Temporary store of urine â The bladder is a hollow organ. The walls are very distensible, with a folded internal lining (known as rugae), this allows it to hold up to 600ml. Assists in the expulsion of urine â During voiding, the musculature of the bladder contracts, and the sphincters relax.
Structure. The bladder wall is made up of 3 layers. 1  The urothelium lines the inside of the bladder, ureters and urethra. 2  It is made up of urothelial cells, or transitional cells. 3  It is also called the transitional epithelium. 4  The lamina propria is a layer of connective tissue.unction. The bladder stores urine. Urine is made by the kidneys and travels to the bladder through 2 long tubes called ureters. When the bladder is full, the muscles in the bladder wall tighten to pass urine out of the body through the urethra.