Question Detail

MIC 121 Mcb compilations Objective Question
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Question

What makes chocolate agar an enriched medium?
Options
A It includes selective agents to inhibit unwanted bacteria
B It has a high salt concentration
C It contains glucose as a carbon source
D It contains heat-treated blood, giving it a brown color
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Chocolate agar is an enriched medium because it contains heat-treated blood (lysed red blood cells), which releases factors like NAD (V factor) and hemin (X factor) necessary for the growth of fastidious bacteria like Haemophilus spp. and Neisseria spp. The heating process gives it a brown, 'chocolatey' color.

Hint

Chocolate agar's name hints at its appearance, which is derived from a key ingredient crucial for supporting the growth of particular bacteria.

Question Info

Course: MIC 121
Topic: Mcb compilations
Type: Objective
Difficulty: Not specified
Question 796 of 984
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