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Explain about the Intestinal calcium absorption?
Intestinal calcium absorption is mainly controlled by the serum concentration of 1, 25- (OH)2D as discussed above. The activity of the 1-α-hydroxylase, which catalyzes 1, 25-(OH)2D production from 25-hydroxyvitanlin D (25-OH-D) in the kidneys, is negatively related to plasma calcium and phosphate concentrations and positively related to plasma parathyroid hormone concentrations. Thus, the inverse relationship between calcium intake and fractional absorption described above is enhanced by the inverse relationship between dietary calcium and serum 1, 25-(OH)2D. We will learn about this aspect later in this section under the heading regulation of Ca concentration.
Types of Ovarian Cycles in Mammals Mammals exhibit two types of ovarian cycles; Estrous Cycle, exhibited by non-primates such as rats, cats, dogs, pigs, and Menstr
What is meant by binomial nomenclature and what are its basic rules? Scientific nomenclature of a species must have, at least, two names: one that classifies it as genus and th
Arthropoda
Why is the reaction of ethane and chlorine not a free-radical addition reaction? Because no free radicals are include in the reaction process only carbo cations and Cl- are evo
How are lipids used as an energy source by the organism? Carbohydrates are the major energy source for aerobic cell respiration. In the absence or deficiency of such substances
If molecules diffuse down their concentration gradient and achieve equal concentration throughout a container or cell, does all movement stop? Explain your answer.
Q. What do you mean by eutrophication? The Eutrophication is the process of excessive increasing of nutrients, like nitrate and phosphate in water due to direct deposit of non
Determine the function of Iron for athletes? Iron carries oxygen and is another important mineral for athletes. It also affects oxygen transport and aerobic metabolism as a com
Ethylene - Plant Growth Substances This hydrocarbon C 2 H 2 is a gas and is unbelievably a small and simple molecule to be accepted as a hormone. Ethylene is not produced by
MASTITIS The term mastitis refers to the inflammation of udder and is characterized by physical and chemical changes in the milk which include discolouration, presence of clots
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