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no, because CNA agar inhibit all gram-negative bacteria including Neisseria spp

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14y ago

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Agar media required for growth of Neisseria meningitidis?

Thayer-Martin agar is a selective agar medium commonly used for the growth of Neisseria meningitidis. It contains antibiotics that inhibit the growth of competing bacteria, allowing N. meningitidis to grow. Additional supplements like blood or chocolate agar may also be used to enhance the growth of this bacterium.


Which gram negative bacteria do not grow on macconkey and EMB?

Gram-negative bacteria that do not grow on MacConkey agar and Eosin Methylene Blue agar include: Helicobacter pylori Neisseria gonorrhoeae Haemophilus influenzae


What fastidious organisms grow only on chocolate agar?

Most pathogenic organisms will grown on chocolate agar, it depends mostly on the incubation conditions i.e. temperature, presence/absence of oxygen etc. However there are some fastidious organisms that require certain growth factors to grow.


You were instructed to compare the growth on the NA and Columbia CNA agar plates. Would it have been better to compare the organisms on the CNA plate?

Yes, comparing the growth on the Columbia CNA agar plate would have been more informative as it contains colistin and nalidixic acid inhibitors to select for Gram-positive organisms. This allows for better differentiation and identification of Gram-positive bacteria based on their ability to grow or inhibit growth on this selective media.


Does Haemophilus influenzae grow on blood agar?

Yes, Haemophilus influenzae can grow on blood agar.


Will Alcaligenes faecalis grow on MacConkey agar?

No, Alcaligenes faecalis will not grow on MacConkey agar. MacConkey agar is selective for gram-negative bacteria that ferment lactose. Alcaligenes faecalis is a gram-negative bacteria that does not ferment lactose, so it will not grow on MacConkey agar.


What agar does Corynebacterium xerosis grow on?

Corynebacterium xerosis typically grows on nutrient agar.


If an organism can grow on both a nutrient agar and a MacConkey Agar on which would you expect it to grow better?

You would expect the organism to grow better on nutrient agar because it is a general-purpose medium that supports the growth of a wide range of organisms. MacConkey agar, on the other hand, contains inhibitors that selectively inhibit the growth of Gram-negative bacteria, so the organism may not grow as well on this medium.


What do scientists grow bacteria on?

Scientists often grow bacteria on agar plates because agar provides a solid surface for bacteria to thrive on. Agar is composed of nutrients that bacteria need to grow, making it an ideal medium for cultivating and studying bacteria in a controlled environment.


What does it mean to inoculate an agar plate?

Inoculating an agar plate refers to transferring microorganisms onto the surface of the agar using a sterile inoculating loop. This allows the microorganisms to grow and form visible colonies that can be studied or identified.


How do you grow Klebsiella pneumoniae?

MacConkey agar


Can obligate hyper thermophiles grow on agar?

no