Ion exchange
method affect the solubility and function of protein, and proteins can be separated
on the basis of the charge they get. If pH is greater than
pI of a given protein, that protein gets
negative charge and become an anion, and when the pH
is less than the pI of that same protein, it gets positive
charge and become a cation.
<span> Gastrin is produced by
G cells in the pylorus and the duodenum. Gastrin stimulates the secretion of
both parietal and chief cells. It causes the gastric glands to increase their
secretory activity and stimulates gastric motility. Saliva, food, and gastric
juice are mixed together in the stomach to form chyme. The stomach serves as a
reservoir for food before release into small intestine. Gastric juice is
secreted into the lumen of the stomach. Gastrin is secreted into the
bloodstream.</span>
Answer:
Option (1).
Explanation:
Dual x-ray absorptiometry technique is used for the evaluation of the bone mineral density. The bone densitometry is normally used in this technique to estimate the mineral content of bone.
The radiation dose in the absorptiometry is considerable and only small or low amount of radiation dose is considered. The heavy dose may cause health problems in the individual. The photon energies are used for the bone and soft tissue. The treatment of osteoporesis can be done by this technique.
Thus, the correct answer is option (1).