Which one of the following statements is not correct regarding the amino acids, tyrosine, present in protein rich food?

Which one of the following statements regarding starch and cellulose is not correct?

Which one of the following statements is not correct?

Which one of the following is not correctly matched (Plant Nutrients - Role)

Which one of the following metals is present in the vitamin B₁₂?

Which one of the following compounds is not a vitamin?