What is the function of Renin?

Question

it's for biology. got no idea what it does and need to write up a practicle experiment about changing the concentration and fresh milk?!?!?!?!

Answer 1

Just to correct the first and second answers...Rennin is the enzyme in the stomach, its function is to curdle milk so that is stays in the stomach longer be digested properly.
Rennet is a drink made from rennin.You add it to milk(usually flavoured), the milk curdles and you then drink/eat it. Mmm nice.

Answer 2

Function Of Renin

Answer 3

Renin Function

Answer 4

c. increasing blood pressure Renin is an enzyme released by the juxtaglomerular cells in the glomerular arterioles the helps the formation of angiotensin 1 from angiotensinogen. Angiotensin 1 travels through the blood reaching the lungs where Agiotensin Converting Enzyme (ACE) forms angiotensin 2 , a powerful vasoconstrictor. As the other guy/girl said it helps to build up the blood pressure when it's low, with the help of ADH & Aldosterone.

Answer 5

http://en.wikipedia.org/wiki/Renin

As for the milk experiment, perhaps they want you to make cheese??

4. Science Terms: Distinctions, Restrictions, and Confusions

§ 39. renin / rennet / rennin


It was probably just another recipe swapped among Renaissance homemakers. To make cheese, first slaughter a calf, then remove the inner lining of the fourth stomach, pour in milk, allow it to curdle, remove the curds, squeeze them together to remove all the liquid, and set the unripened cheese aside to age. The initial component for this concoction—the bag made of a calf’s stomach lining—was called rennet, a word linked to an Old English and Old German verb meaning “to flow” or “to run.” Exactly why the rennet caused milk to curdle remained unanswered for a couple of centuries. Investigations in the late 1800s revealed the curdling was produced by a compound known as an enzyme present in the juices of the stomach. This compound, it was shown, helped break apart a protein called casein in the milk and, in the process, triggered the formation of another compound that then bonded to the calcium in the milk, forming curds. The enzyme was dubbed rennin, a combination of rennet and the suffix -in, “neutral chemical compound.” This suffix appears in the names of other enzymes such as trypsin, the compound produced in the pancreas that breaks proteins into smaller bits for use by the body. 1
While the stomach is the site of rennin production, the kidneys are the source for renin. Renin, in fact, comes from Latin renes, “kidneys,” combined with -in. When a major upset such as dehydration or hemorrhage causes the body’s blood pressure to become dangerously low, specialized cells in the kidneys begin to produce renin. The renin circulates in the bloodstream ready to perform its very specialized task: it clips two component parts, called amino acids, from another blood-borne protein known as angiotensin. This newly abbreviated protein, now called angiotensin I, is clipped further by another blood-carried compound to form angiotensin II. This substance causes blood vessels to constrict, thus raising blood pressure back to normal levels and ensuring the continued proper functioning of the body.

Answer 6

I think you may mean "rennet" Rennet is an enzyme the converts the soluble proteins in milk into an insoluble protein..it makes milk clot. It's used in making cheese.

I'm sure if you google rennet, you'll find what you need...

Renin is a very different enzyme...

Answer 7

When blood volume is low, juxtaglomerular cells in the kidneys activate their prorenin and secrete renin directly into circulation. Plasma renin then carries out the conversion of angiotensinogen released by the liver to angiotensin I. Angiotensin I is subsequently converted to angiotensin II by the enzyme angiotensin-converting enzyme found in the lungs. Angiotensin II is a potent vaso-active peptide that causes blood vessels to constrict, resulting in increased blood pressure. Angiotensin II also stimulates the secretion of the hormone aldosterone from the adrenal cortex. Aldosterone causes the tubules of the kidneys to increase the reabsorption of sodium and water into the blood. This increases the volume of fluid in the body, which also increases blood pressure.

Answer 8

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Answer 9

rennin is a active enzyme in rennet and helps calves to digest their mothers milk, it is also a coagulant used in cheese making where the milk is split (converted) into curds and whey during the cheese making process

Answer 10

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Renin is part of the RA-system and can increase the blood pressure, so C is correct