5.8 Amino Acid Decarboxylation

Question 1

Enzymes that catalyze the removal of the carboxyl group of an amino acid are called:

Answer 1

-decarboxylases

Question 2

The bromocresol purple in the Moller’s decarboxylase base medium functions:

Answer 2

-as a pH indicator

Question 3

Decarboxylation of amino acids results in the accumulation of — end products:

Answer 3

-alkaline

Question 4

In the decarboxylation test, which amino acid is commonly used as a substrate?

Answer 4

-lysine

Question 5

The purpose of the overlay of mineral oil is for:

Answer 5

-creates an anaerobe environment

Question 6

If the culture turns yellow/or no color change after incubation in ornithine and lysine decarboxylase test, this means the organism:

Answer 6

-does not produce decarboxylase

Question 7

If a culture turns purple after incubation in ornithine and lysine decarboxylase test, this means the organism:

Answer 7

-produces decarboxylase

Question 8

Decarboxylation and deamination tests were designed to differentiate members of ??

Answer 8

-Enterobacteriaceae

Question 9

Enzymes that catalyze the removal of an amino acids amine group are called ??

Answer 9

-deaminases