Welcome to Wikipedia! :-) Hope you like the place and decide to stay. BTW, you might want to check out Wikipedia:WikiProject Molecular and Cellular Biology; it's an organizing space for all the work in the molecular/cellular biology domain.
If you get lost in the complexity of Wikipedia, I recommend checking out Wikipedia:Tutorial.
Pretty much every page you go to can be edited, including this type of page (a discussion page). To respond, just click "edit" and write your response below the comment you received. Best regards,--Eloquence* 06:42, 21 June 2011 (UTC)