MLS (ASCP) Practice Test 5

10 free MLS (ASCP) practice questions in the real exam format, covering the official content areas, with an explanation for every answer.

MLS (ASCP) Practice Test 5Tutor mode

Question 1 of 10

Microbiology

A stool culture from a 30-year-old man with fever and diarrhea after a catered event grows green colonies with black centers on Hektoen enteric agar. Results on the isolate are shown. Which organism is MOST likely, pending serologic confirmation?

Biochemical reactions
TestResult
Lactose (MacConkey)Not fermented
TSIK/A, gas +, H2S +
UreaseNegative
IndoleNegative
Lysine decarboxylasePositive
MotilityPositive