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.
1 The mucous membrane is loosely connected to its muscular wall, except in a triangular region in its base (fundus). 2  This region is known as the trigone of the bladder. The mucous membrane in the empty bladder is in numerous folds or rugae except in the trigone area where it is always smooth (due it its firm attachment to the muscular wall).