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Negative feedback; decreases in pH inhibit Gastrin secretion, although far from completely. At pH 2.5, about half the amount is released compared to that at pH 5.5 - furthermore, this is an idealized situation and the loop is more complex, especially in the presence of pathology: in ulcer patients for instance, there is little pH dependent inhibition at all.
What else can I help you with?
Does the stomach secrete gastrin when its internal pH rises?
Yes, Gastrin is a hormone that the stomach secretes to help balance the pH when it rises. see chacha.com
Does a low pH exert a negative feedback action on the production of cholecystokinin or on the production of gastrin?
Some pituitary hormones have a negative
Bacterium induced colitis and pH?
Changes of pH in the bowel is an effect of colitis, and not the cause of colitis.
You would expect blood levels of what to be high when the pH of stomach chyme is at its lowest?
Histamine levels would be high in the blood when the pH of stomach chyme is at its lowest. Histamine is released by enterochromaffin-like cells in response to low pH levels in the stomach, and it stimulates the release of gastric acid.
How can one remedy the effect of pH CHANGE due to sterilization?
One way to remedy the effect of pH change due to sterilization is to buffer the solution. Buffers resist changes in pH and can help maintain the desired pH level. Another approach could be to add a small amount of acid or base to adjust the pH back to the desired level. Regular monitoring of pH during and after sterilization can also help in detecting and addressing any changes promptly.
What substances functions to control the release of hydrochloric acid to prevent excessive acidity?
I was looking for the answer to this too, and found that Gastrin (a hormone of the stomach) stimulates hydrochloric acid to be released to maintain the appropriate pH level. Are you in the same nutriton class as me? haha cause this is a quiz question for mine.
What effect has iron oxide on pH?
Iron oxide has little to no effect on pH because it does not readily dissolve in water to release ions that could alter the pH of a solution. However, in the presence of acidic or basic conditions, iron oxide may undergo reactions that could affect the pH indirectly.
True or false Chyme regulates the synthesis of HCl permitting it to be made only when the pH in the stomach is higher than about one and a half?
false it's Gastrin
What will lowering the pH of a medium do to the angle of refraction of light?
Lowering the pH of a medium, such as a liquid, will not have a direct effect on the angle of refraction of light. The angle of refraction of light is primarily determined by the refractive index of the medium, which is not inherently influenced by pH changes. However, extreme changes in pH may induce changes in the optical properties of the medium, potentially leading to alterations in the refraction of light.
How does pH levels effect an enzyme?
Changes in pH levels can alter the shape and charge of the active site of an enzyme, affecting its ability to bind with the substrate. This can either enhance or inhibit enzymatic activity, depending on the specific enzyme and its optimal pH range. Extreme pH levels can denature the enzyme, rendering it inactive.
How does a buffer work in chemistry to maintain a stable pH level?
A buffer in chemistry works by resisting changes in pH levels. It contains a weak acid and its conjugate base, which can react with added acid or base to maintain a stable pH. The buffer system can absorb or release hydrogen ions to prevent drastic changes in pH.
What is varied when tested the effect of pH enzyme activity?
The pH is varied to effect, by its affect, this test.
