Association between sunrays and vitamin D
Write down the association between sunrays and vitamin D?
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Vitamin D, calciferol, is synthesized in skin by action of ultraviolet range of sunrays on precursor molecules. Later it is transformed in its active form in liver and in kidneys.
What do ADP and ATP signify? What are the roles of such molecules for cellular energetic metabolism?
According to function of transmitted neural impulse which are the types of the neurons? How dissimilar are concepts of efference and afference of neural impulse transmission?
Elucidate the word polyembryony?
Why the amphibian circulation is categorized as double and incomplete?
Why is AIDS tricky to prevent by the vaccination?
Explain presbyopia and astigmatism?
Write down the main plant tissues which form rings observed on the stem sections of some trees?
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Explain the plant hormones?
Describe saytzeff’s rule in brief?
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