Because of their high rate of mutation. They also can be hard to track because they infuse their DNA into your body cell DNA and can lay dormant and undetected for years.
1. The right answer is - Hypothalamus (manufactured by the hypothalamus, stored in the pituitary gland).
Vasopressin, or antidiuretic hormone, is a peptide hormone synthesized by the supraoptic and paraventricular nuclei of the hypothalamus, and released by the posterior pituitary gland (neurohypophysis).
It mainly has an anti-diuretic role in the kidney, where it causes a reabsorption of water via an action on the distal segment of the nephron during a dehydration body. Its gene is AVP located on human chromosome 20.
2. The right answer is - Increased Secretion of Vasopressin To Maintain Less Loss Of Water.
Vasopressin has an antidiuretic action: it decreases the volume of urine by increasing the water permeability of the collecting tube. It binds to the V2 receptor, which is coupled to a Gα protein, which activates a signaling cascade through the PKA. This causes the synthesis of aquaporin 2 (transmembrane pore) as well as its translocation to the apical / urinary membrane.
Particle or Subatomic particle