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Explain the Bioavailability of nutrients?
The amount of many nutrients needed in the diet depends on the absorption or bioavailability of the nutrients. Bioavailability is defined as 'the percent of the dietary nutrient absorbed and utilized for a specific function by the body'. The percent absorption varies widely for different nutrients depending on the quantities ingested and the presence of other constituents of the diet. Examples are: iodine absorption is nearly loo%, calcium absorption in a normal adult is about 40% to 60% while that of iron varies from 1% to 15% , depending on the type of iron and other constituents of the diet. The concept of bioavailability is best illustrated by iron, Iron is present as inorganic iron in vegetarian foods and as organic iron in meat and flesh foods, The inorganic form of the iron, as you may already be aware, is known as 'non-haem iron' while the organic form is known as haem iron. The 'non-haem iron'' absorption is affected by several constituents of the diet while haem iron absorption is relatively independent of these constituents.
Explain about the RNA Viruses - carcinogenic? All oncogenic RNA viruses are retroviruses. They are of 2 types. They are acute transforming retroviruses and slow transforming re
Briefly explain the following feeding mechanisms in holozoic organisms: filer feeding,fluid feeding and deposit feeding.
Determine the Symptoms of Dehydration? The symptoms of dehydration are: Thirst Loss of appetite Decreased urination Impaired physical performance Nau
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Mention the role o ribosome's in peptide -bond formation .How does ATP facilitate it? a) Of springs derived by asexual reproduction are known as clones. Justify giving two R
Roles of Abscisic Acid Abscisic acid (ABA) is a particularly interesting hormone with regard to the regulation of its own levels. Its levels rise and fall dramatically in seve
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Give a specific example of homeostasis An owl handles its body temperature by burning fuel to make body heat and by fluffing up its feathers to trap an insulating layer of air
Bio-medical waste management Persons coming in contact with bio-medical waste are prone to get injury from sharps likes needles. Injury due to sharps leads to life threatening
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