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How can the blood coagulation (clotting) process be described?
Blood clotting encompasses a sequence of chemical reactions whose respective products are enzymes that catalyze the following reactions (that is why the clotting reactions are known as cascade reactions). In the plasma thromboplastinogen transforms into thromboplastin, a reaction triggered by tissue and platelet factors liberated after injury of the blood vessel. Thromboplastin then catalyzes along with calcium ions the transformation of prothrombin into thrombin.
Thrombin then catalyzes a reaction that makes fibrin from fibrinogen. Fibrin, as an insoluble substance, precipitates to produce a network that traps red blood cells and platelets forming the blood clot and having the hemorrhage.
Q. What is the main biological process that consumes carbon dioxide? The major biological process that consumes carbon dioxide is photosynthesis.
ANTICOAGULANTS (a ) Heparin (hepar = liver) . It is synthesized by mast cells of connective tissue and liver cells. It is a heteropolysaccharide. It increases the effectivit
Angiosperms are the flowering plants. They first appeared at least 110 million years ago from the unknown gymnosperm ancestor, these flowering plants have risen to dominance in th
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Use of micro-organisms to control insect pests, pathogens or weeds constitutes biological control, and the biological agents employed are called biocontrol agents. Micro-organis
Define the Water Bath with Shaker? An electric water bath with a shaker that can hold test tubes as well as conical flasks. When on a non-shake mode, it acts as a simple water
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(a) What do you understand by the term 'accommodation'? (b) What part does the lens play in this process? a) Accommodation is the way the eye can focus either
Combination of diuretics may be indicated in patients previously resistant to furosemide alone. Profound diuresis and clinical improvement may occur after the addition of metolazon
Q. Does pH affect the enzyme activity? The concentrations of hydrogen ions in solution affect the enzyme activity. Each enzyme has utmost efficiency under an optimum p H . S
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