MCQ
Natural reservoir of phosphorus is:
- ASea water
- BAnimal bones
- CRock
- DFossils
Explanation:
The natural reservoir of phosphate is the rock which contains phosphorus in the form of phosphates when rocks are weathered, minute amounts of these phosphate dissolve in soil solution and are absorbed by the roots of the plants. Herbivores and other animals obtain this element from plants.
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$(a)$ $C-$peptide is not present in mature insulin.
$(b)$ The insulin produced by $rDNA$ technology has $C-$peptide.
$(c)$ The pro-insulin has $C-$peptide.
$(d)$ $A-$peptide and $B-$peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.