Question

macconkey agar is designed to differentiate bacteria based on their ability to: ferment glucose utilize oxygen form endospores ferment lactose question 6 (1 point) mannitol salt agar contains a high concentration of salt, making it selective for gram - positive species. true false

Explanation:

MacConkey agar contains lactose and a pH - indicator. Bacteria that can ferment lactose produce acid, which changes the color of the colonies on the agar. Mannitol Salt Agar has a high salt concentration that inhibits the growth of most Gram - negative bacteria and selectively allows the growth of many Gram - positive bacteria, especially Staphylococci.

Answer:

Question 5: ferment lactose
Question 6: True