Chlorophyll contains

Hypo is used in photography because of its:

Which chelating ligand is used to remove excess $Cu$ poisoning in plants and animals?

Which of the following is considered as an anticancer species?

Discuss briefly,giving an example in each case,the role of coordination compounds in:
$(i)$ biological systems
$(ii)$ medicinal chemistry
$(iii)$ analytical chemistry
$(iv)$ extraction/metallurgy of metals

Chlorophyll is a