Following structure is related to which compound ?

following structure is related to which AA?

Which one of the following structure formulae of two organic compound is correctly identified along with its related function

Which of the following structure is related to formation of middle layer of spermatophore in periplaneta?

Which of the following structure is related to formation of middle layer of spermatophore in periplaneta?

Which of the following structures represents a chiral compound?

Which of the following structures is not related to osmoregulation or maintenance of water blance?

Which of the following structures is not related to osmoregulation or maintenance of water balance?

Which of the following structure is not related to body balance ?