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Do enzymes act better under acid or basic pH?
Most enzymes act in pH among 6 and 8, a range that corresponds to the general acidic level of cells and blood. There are enzymes, though, that act only under very acid or very basic pH. So enzyme activity depends on pH interval.
In the stomach, for instance, the gastric juice has a very low pH, around 2, and there the enzyme pepsin acts to intensively digest proteins. In the duodenum, pancreatic secretions enhance the pH of the enteric juice for the action of other digestive enzymes, for example, trypsin.
Origin and Evolution of Metazoa Most of the early metazoans were soft bodied and so their fossils are rare. The extremely fragmented fossil record does not shed any specific l
EVOLUTION OF MAN - Mammals evolved from primitive reptiles (therapsida) in Triassic period, about 210 million years ago. Mammals existed as inconspicuous group of small
For a sample containing both protein and nucleic acid, the absorbance measured at a particular wavelenght will be the sum of contributions from both types of molecule. using the pr
Q. What is mitral stenosis? Most common cause of mitral stenosis is rheumatic fever. Nearly 30 per cent of patients with rheumatic fever may go on to develop pure mitral valve
The doctor writes an order for 125 mg of a medication. The label on the vial states "50 mg per ml". How many ml should the nurse administer?
why is blood called a fluid connective tissue ?
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Define hexose monophosphate pathway The hexose monophosphate pathway (HMP also called the pentose phosphate pathway, or phoshogluconate pathway) consists of Mo irreversible o
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