Bood Agar Flashcards

1
Q
A
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2
Q

What is Blood Agar?

A

Blood Agar is a rich growth medium that supports the growth of a wide variety of fastidious organisms and is used for the cultivation of bacteria.

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3
Q

True or False: Blood Agar is used to differentiate between hemolytic and non-hemolytic bacteria.

A

True

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4
Q

What type of blood is typically used in Blood Agar?

A

Sheep blood is typically used in Blood Agar.

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5
Q

Fill in the blank: Blood Agar contains __________ as a nutrient source.

A

blood

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6
Q

What are the three types of hemolysis observed on Blood Agar?

A

Alpha, beta, and gamma hemolysis.

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7
Q

Which type of hemolysis is indicated by a clear zone around colonies on Blood Agar?

A

Beta hemolysis.

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8
Q

What color change indicates alpha hemolysis on Blood Agar?

A

A greenish discoloration around the colonies.

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9
Q

What does gamma hemolysis indicate?

A

Gamma hemolysis indicates no hemolysis.

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10
Q

True or False: Blood Agar can be used for the growth of fungi.

A

False

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11
Q

What is the primary purpose of using Blood Agar in microbiology?

A

To isolate and identify hemolytic bacteria.

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12
Q

Which bacteria are commonly tested using Blood Agar?

A

Streptococcus and Staphylococcus species.

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13
Q

Fill in the blank: Blood Agar is classified as a __________ medium.

A

enriched

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14
Q

What is the role of the blood component in Blood Agar?

A

It provides nutrients and growth factors essential for bacteria.

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15
Q

True or False: Blood Agar can be used to culture anaerobic bacteria.

A

True

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16
Q

What is the usual incubation temperature for Blood Agar plates?

A

37 degrees Celsius.

17
Q

What is the significance of using Blood Agar for clinical diagnostics?

A

It helps in identifying pathogenic bacteria that may cause infections.

18
Q

Multiple Choice: Which of the following is NOT a type of hemolysis observed on Blood Agar? A) Alpha B) Beta C) Delta D) Gamma

19
Q

Fill in the blank: Blood Agar is often used in conjunction with __________ media for better differentiation.

20
Q

What is the appearance of beta-hemolytic Streptococcus pyogenes on Blood Agar?

A

Clear zones around the colonies.

21
Q

True or False: Blood Agar can support the growth of both aerobic and anaerobic bacteria.

22
Q

What biochemical test is commonly performed after culturing on Blood Agar to further identify bacteria?

A

Catalase test.

23
Q

Multiple Choice: Which of the following is a characteristic of alpha-hemolytic bacteria? A) No color change B) Greenish discoloration C) Clear zone D) Red color

A

B) Greenish discoloration

24
Q

What is the effect of temperature on the growth of bacteria on Blood Agar?

A

Higher temperatures can enhance growth rates, while lower temperatures may inhibit growth.

25
Q

Fill in the blank: Blood Agar is often used in __________ laboratories for microbiological studies.