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PINEAL GLAND (EPIPHYSIS CEREBRI) -
Hormone - Melatonin concentration in the blood appears to flow a diurnal (day-night) cycle as it arises, in the evening and through the night and drops to a low around noon. Because of this light mediated response, the pineal gland may act as a kind of "biological clock" which may produce circadian rhythms (variations following a 24 hour cycle).
Girls blind from birth attain puberty earlier than normal, apparently because there is no inhibitory effect of melatonin on ovarian function.
Define Methods for Studying the Nutrient Requirements? 1) Population survey of nutrient intakes of healthy individuals is one method of estimating nutrient requirements. The av
INSULIN Linear polymer of b-D-Glucose. Insulin is small-sized (25 - 35 residues) fructosan homopolysaccharide which is a reserve carbohydrate present in roots, tubers and
Which type of chemical bond maintains the pairing of each chain in the DNA molecule? To produce the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds
How could coacervates have facilitated the emergence of life on earth? Coacervates probably provided a nitid separation between an internal and an external environment and thus
Total Artificial Heart : Jarvik seven was the first successful total artificial heart supporting the patient for 112 days. The disadvantage is that the patient has to be connecte
FOOD Food consists of H O, minerals, vitamins carbohydrate, lipid & protein. A person needs 1600 cal. per day. This is BMR (Basal metabolic rate). Needed 2500 cal. per
Define about the Photometry - colorimetry? Photometry is the measurement of the luminous intensity light or the amount of luminous light falling on a surface from such a source
If one determines the concentration of cortisol in the blood plasma to be 10 ugrams/ml and that in a 24 hour period a person excretes 10 mgs of cortisol, calculate the volume of bl
Q What are the major functions of the blood? The blood is a means of substance transportation throughout the body. The blood distributes hormones, nutrients, oxygen, cells and
Conservative Substitution: The nucleotide mutation that alters the amino acid sequence of protein, but which causes substitution of one amino acid with another which has a side ch
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