Buttermilk and yogurt are produced by bacteria that form
A)ethyl alcohol.
B)acetaldehyde.
C)pyruvate.
D)lactate.
E)citrate.

Question

Quizplus · Accepted Answer

Buttermilk and yogurt are produced by bacteria that ferment lactose in milk, producing lactic acid as a by-product. Lactic acid is what gives these dairy products their characteristic tanginess. Lactate is the conjugate base of lactic acid, so it is the correct answer. Ethyl alcohol, acetaldehyde, pyruvate, and citrate are not involved in the production of buttermilk and yogurt.

Buttermilk and Yogurt Are Produced by Bacteria That Form