________ is the "key" that "unlocks" the active site of an actin molecule

Where did the idea of an official pharmacopoeia, to contain a list of pharmaceutical products along with their formulae and methods of preparation, first originate?

A) Baghdad B) Heidelberg C) Florence D) Paris

Low-level laser would be contraindicated for application over

A) photosensitive skin B) hemorrhagic areas C) cancerous tissue D) all of the above