Multiple Choice
The acid-fast colonies in the image provided demonstrated no color change with exposure to light. Source: CDC and Dr. George Kubica
Given that the organism produces a yellow color on the niacin accumulation test and pink color on the nitrate reduction test, what additional characteristic is considered presumptive for this organism?
A) Serpentine cording
B) Rapid growth
C) Requirement for hemin
D) Growth at 30°C
Correct Answer:

Verified
Correct Answer:
Verified
Q10: Which of the following Mycobacterium spp. is
Q11: Which of the following organisms morphologically resembles
Q12: An acid-fast bacillus is recovered from a
Q13: A skin lesion grows an acid-fast bacilli
Q14: Mycobacterium tuberculosis is classified as a<br>A) photochromogen.<br>B)
Q15: The presence of acid-fast bacilli in a
Q16: Which of the following organisms is used
Q18: The source for many Mycobacterium spp. is<br>A)
Q19: Infections due to tubercle bacilli are<br>A) typically
Q20: Molecular testing is a valuable tool useful