Question

Without crystal violet in the MAC agar, what could grow as a result? A) Gram-positive bacteria

B) Gram-negative bacteria
C) Fungi
D) None of the above

Answer 1

Both Gram-positive and Gram-negative bacteria can grow without crystal violet in the MAC agar, but not fungi.

Step-by-step explanation:

Without crystal violet in the MAC agar, both Gram-positive and Gram-negative bacteria can grow as a result. Crystal violet dye is used in the MAC agar to stain both types of bacteria purple. Without it, both types of bacteria would not be stained and would grow on the agar. Fungi, on the other hand, would not grow on the MAC agar as it is specifically designed to culture bacteria.