Question
Ergosterol is a precursor of :
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
Vitamin D
Ergosterol Precursor to Vitamin D
Ergosterol is a type of sterol, a lipid molecule, primarily found in the cell membranes of fungi, including yeasts, and some protozoa.
This compound is biologically significant as it serves as the direct precursor for the synthesis of Vitamin D.
When ergosterol is exposed to ultraviolet (UV) radiation, it undergoes a photochemical reaction. This process initiates the conversion of ergosterol into previtamin D2, which subsequently isomerizes to form Vitamin D2, also known as ergocalciferol.
Therefore, ergosterol is the essential precursor of Vitamin D.
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Important Questions from Miscellaneous
- Which of the following relationships is/are not true?
(A). Most probable velocity = $\sqrt{\frac{2RT}{M}}$
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Choose the correct answer from the options given below - Match List-I with List-II
List-I List-II Electronic Configuration First Ionisation energy (kJ mol$^{-1}$) (A). ns$^2$ (I). 2100 (B). ns$^2$np$^1$ (II). 1400 (C). ns$^2$np$^3$ (III). 800 (D). ns$^2$np$^6$ (IV). 900
Choose the correct answer from the options given below: - The shielding constant of a 2p electron (calculated using Slater's rules) is
- Match List-I with List-II
List-I List-II Spectroscopy Property (A). Raman (I). Polarizability (B). FTIR (II). Dipole Moment (C). UV-Visible (III). Absorbance (D). NMR (IV). Spin
Choose the correct answer from the options given below: - The structure of protein comprises of:
(A). Primary structure of protein is associated with amino acids
(B). Secondary structure of protein is associated to peptides
(C). Tertiary structure of protein is associated with polypeptide chains
(D). Quaternary structure of protein is associated with polypeptide chains
Choose the correct answer from the options given below:
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