Question 1 Not yet graded / 6 pts Question 2 Not yet graded / 6 pts BIOD 171 Microbiology Lab 9 Q & A
(Latest 2023 / 2024) Exam Portage Learning
Using the observations made and recorded from PL09 Unknown Pathogen, complete the results sections accordingly.
Given Culture A and Culture B were accidentally mixed, what observations were made from the Gram stain (shown below)?
Your Answer:
Purple: Gram-Positive, coccus, clusters
Pink-: Gram-Negative, Bacillus
Gram-positive cocci (spherical) clusters and Gram-negative bacillus (rods) were observed.
Using the observations made and recorded from PL09 Unknown Pathogen, complete the results sections accordingly. 1 / 2
Question 3 Not yet graded / 6 pts
The hemolytic properties of both cultures were next examined by streaking each culture on a blood agar plate (shown below). What is the hemolytic status of Culture A? Culture B?
Your Answer:
Culture A: Beta Hemolysis (clear margins around colonies/yellowish)
Culture B: Gamma Hemolysis (colonies growing but no color change in the medium)
Culture A exhibits beta hemolysis as defined by the region of clearing around the growing bacterial streak.Culture B exhibits gamma-hemolysis (non-hemolytic) as indicated by the white colonies growing on the still red agar.
Using the observations made and recorded from PL09 Unknown Pathogen, complete the results sections accordingly.
Given the results from a MacConkey agar plate shown below, what is the shape of Culture A? Culture B?
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