Correct answer
A. magnesium
Explanation
Magnesium is a central metal which is a naturally occurring chelate compound for chlorophyll.
Reactions in which simple substances are combined to form complex substances are called_____________?
Which of the following are proteins in nature?
The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called ?
The DNA fragments have sticky ends due to___________?
On wound __________ fight foreign particles, like bacteria?
Operculum is present in_____________?