Exams › NEET › Biology

Which of the following elements is a constituent of biotin?

1. (a) Sulphur
2. (b) Magnesium
3. (c) Calcium
4. (d) Phosphorus

Correct answer: (a) Sulphur

Solution

Biotin contains a sulfur atom as part of its heterocyclic ring structure, which is essential to its chemical identity. The other listed elements are not characteristic constituents of biotin.

Related NEET Biology questions

• The most important mineral for blood coagulation is
• Match the following concerning essential elements and their functions in plants: (a) Iron (i) Photolysis of water (b) Zinc (ii) Pollen germination (c) Boron (iii) Required for chlorophyll biosynthesis (d) Manganese (iv) IAA biosynthesis Select the correct option:
• In which of the following forms is iron absorbed by plants?
• In which of the following, all three are macronutrients?
• Minerals known to be required in large amounts for plant growth include:
• Which of the following elements is responsible for maintaining turgor in cells?

⚔️ Practice NEET Biology free + battle 1v1 →