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Define Functions of selenium in humans?
Until recently, the only known metabolic role of selenium in humans was as a component of glutathione peroxidase which along with vitamin E and superoxide dismutase forms a part of the and-oxidant defense system. However, more selenoproteins are being discovered and currently it is estimated that 50-100 selenoproteins are present in animals. Selenoproteins in animals and humans are involved in protection from oxidative damage, maintaining adequate thyroid hormone status and protection from injury by a heavy metal like mercury. Three major enzyme systems in which selenium plays an important role have been identified in humans.
These include:
a) Glutathione peroxidases,
b) Iodothyronine deiodonases, and
C) Selenoproteins P and W
If you have a control group for your experience, which of the following statements is true? A. The control group should be identical to each test group with the exception of one va
classes of phylum porifera
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Consider a time when the membrane voltage of a SA node cell in the heart is at its minimum value (near -80 mv). At this time, A. all the voltage-gated calcium channels will be
All of the following make meiosis different from mitosis, EXCEPT A. Meiosis comprises two separate divisions. B. Meiosis only occurs during embryonic development. C. Chromosome num
how to make question on classification of Protozoan parasite
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