Q 17. What organisms will be culture on MacConkey agar during the physiological
ID: 280254 • Letter: Q
Question
Q 17. What organisms will be culture on MacConkey agar during the physiological testing labs and why?
Gram-negative bacteria will be tested, since the presence of crystal violet inhibits gram-positive bacterial growth.
Gram-negative bacteria will be tested, since the high salt concentration of crystal violet inhibits gram-positive bacterial growth.
Gram-negative bacteria will be tested, since lactose fermentation inhibits gram-positive bacterial growth.
Gram-positive bacteria will be tested, since the presence of crystal violet inhibits gram-positive bacterial growth.
Gram-positive bacteria will be tested, since the presence of crystal violet inhibits gram-negative bacterial growth.
Gram-negative bacteria will be tested, since the presence of crystal violet inhibits gram-positive bacterial growth.
Gram-negative bacteria will be tested, since the high salt concentration of crystal violet inhibits gram-positive bacterial growth.
Gram-negative bacteria will be tested, since lactose fermentation inhibits gram-positive bacterial growth.
Gram-positive bacteria will be tested, since the presence of crystal violet inhibits gram-positive bacterial growth.
Gram-positive bacteria will be tested, since the presence of crystal violet inhibits gram-negative bacterial growth.
Explanation / Answer
Option a is correct because gram negative bacteria grow on it and crystal violet, bile salt prevent the growth of gram positive bacteria.
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