Answer:
I think that is the literal answer
Alexander Fleming and penicillin is used to help fight gram positive bacteria and other bacterial infections
A catalyst will speed up the activation energy and therefore speed up the reaction. The products will form fast because of this.
Answer:
I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."
Explanation:
I remember from last year but I'm not totally sure. Good luck!
