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.
The mucosa (also known as mucus membrane) is the innermost layer of tissue. Itâs a moist epithilial membrane that lines the alimentary canal lumen from mouth to the anus. The mucosa has three major functions: 1  Secrete mucus, digestive enzymes, and hormones. 2  Absorb the end products of digestion into the blood.3  Protect against infectious disease.tâs a moist epithilial membrane that lines the alimentary canal lumen from mouth to the anus. The mucosa has three major functions: 1  Secrete mucus, digestive enzymes, and hormones. 2  Absorb the end products of digestion into the blood.