Active form of Vitamin D is _____
Calcitriol
Calcitriol option is correct.
Vitamin D undergoes a two-step hydroxylation to become biologically active. Cholecalciferol (D3) is synthesised in the skin or absorbed from diet, hydroxylated in the liver to 25-hydroxycholecalciferol (calcidiol), and finally activated in the kidney by 1α-hydroxylase to \(1,25\text{-dihydroxycholecalciferol}\), called calcitriol.
Calcitriol is the hormonally active form that binds the vitamin D receptor and regulates calcium/phosphate absorption and bone mineralisation. Cholecalciferol is the pre-cursor, calcidiol is the circulating storage form used to assess status, and ergosterol is the plant/fungal provitamin D2 precursor — none of these is the active metabolite.
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Important Questions from Mixed Topic (MH-SET)
.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
List I List II (a) New York Public Library (i) Shelv AR (b) Miami University Augmented Research Group (ii) Smart library (c) Oula University Library (iii) Wolf Walk (d) North Carolina State University (iv) Find the future Codes:
Which part of the QR code represents the encoded data?
