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Define age related changes in Alimentary canal
Advancement in ageing leads to loss of teeth. In this process, first the enamel changes then dentine and cement. Thus their mastication (chewing) efficacy slows down. Frequent weakness of the pharyngeal musculatures leads to dysphagia (difficulty in swallowing), owing to decreased esophageal motility. Mucosal atrophy occurs in gastrointestinal tract leading to reduced gastric and pancreatic secretions. The height of villi gets reduced as ageing progresses. Lactose activity gets reduced in brush border cells. Hence, the nutrient absorption is adversely affected. Liver function decreases due to decrease in hepatocytes.
State about the carbonaceous and nitrogeneous materials The basic ingredients of these are either animal or human excreta containing microorganisms which decompose carbonaceous
Explain the Process of Filtration - Formation of Urine The kidneys form urine in three phases: simple filtration, selective re-absorption and secretion. Let us begin with the p
CHEMICAL EFFECTS OF AIR Wash a small wad of steel wool in gasoline, benzene or carbon tetrachloride (car- bona) to delete any grease. Squeeze it out and then fluff it. As soon
Carbon atoms of fatty acids are numbered from carboxyl carbon. Various conventions are used to indicate the position of double bonds in the fatty acid molecules. Like,
How has the earth changed since it was formed? Ans) The earth has changed particularly since it was formed. Earth was a ball of rock that was strike and changed by loads of imp
Enzyme stabilization Reducing the chances that an enzyme will inactivate (in vivo or in vitro) by changing the environmental conditions (such as pH, temperature, concentra
Explain why earthworms are said to be the most important soil animals. Earthworms ingest organic matter as well as soil where they mix, granulate and excrete to increase stabil
is it true or false that, as the universe expands, it is expanding within an already existing universe
Explain Carbamoyl Phosphate Synthetase (CPSI) ? In the first step, the mitochondria1 enzyme Carbamoyl Phosphate Synthetase 1 converts the ammonia produced by glutamate dehydro
Define the role of Bacteria in soil flora The most abundant soil organisms are primitive, very minute, unicellular organisms devoid of chlorophyll. Bacteria are most abundant i
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