The right answer is A: intercellular communication.
An example of intercellular communication is the one between the kidney, liver and lungs to preserve water-soluble homeostasis.
Angiotensinogen, an inactive protein produced by the liver, circulates in the blood. It is the precursor of the active peptides angiotensin I and II, and the only substrate of renin.
In the event of a drop in the pressure in the renal artery, renin (an enzyme sometimes considered as a hormone) is secreted in the kidney by differentiated myoepithelial cells of the arteriole afferent of the juxtaglomerular apparatus. There are also other stimuli promoting renin secretion: decreased natremia in the distal convoluted tubule, ß-agonists, hyperkalemia, PGI2 and stimulation of juxta-glomerular cells by the sympathetic nervous system)
The angiotensinogen is cleaved by the renin and forms a decapeptide called "angiotensin I", inactive.
Angiotensin I will then be converted primarily to angiotensin II by a carboxypeptidase, the angiotensin converting enzyme. This enzyme, secreted by the liver, acts at the pulmonary level.
Medical assistance safeguards the process of birth. The process of giving birth poses serious risk to both mother and child. There are a number of complications that can occur during the process that can cause the death of both mother and infant.
Medical assistance reduces the risk and ensures a safe delivery by being on hand in the event that a complication may arise. The infant mortality rate and the number of mothers who die in childbirth have been significantly reduced because of medical assistance.
The role of the bacterial proteins in DNA cleavage is to describe the
sequence of bases present at the sticky ends of the cleaved double
strand of DNA.
~Deceptiøn
D) the amount of space that the liquid takes up in a container.
Volume=the amount of space that a substance or object occupies, or that is enclosed within a container.
