50-60 Flashcards
Chocolate agar is prepared how?
Adding blood to molten agar and heating gently
The streak plate method is used for
Isolating pure colonies
What technique estimates bacterial count using dilutions and statistical analysis
Most probable number method
The Petroff - Hausser counting chamber is used for
Direct microscope counts
What is the ideal range for colony counts in standard plate count
25-250 CFU
Which of the following acts as a mordant in gram staining
Gram’s iodine
In gram staining , gram-negative bacteria appear ____
red or pink
What technique is commonly used to isolate pure cultures from mixed samples
Streak plate method
Which type of hemolysis on blood agar is characterized by complete lysis of red blood cells
Beta hemolyis
Cryopreservation involves freezing microorganisms in the presence of
Stabilizing agents like glycerol
