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 heat-treated blood, giving it a brown color
Correct Answer
D It contains a pH indicator to differentiate bacterial species
Correct Answer

Option C is the correct answer.

Detailed Explanation

Chocolate agar is an enriched medium because it contains lysed red blood cells (heat-treated blood), which release nutrients such as hemin (X factor) and nicotinamide adenine dinucleotide (NAD, V factor) required by fastidious bacteria like Haemophilus influenzae and Neisseria gonorrhoeae.

Hint

Think about the main ingredient and its preparation that provides essential growth factors.

Question Info

Course: MIC 121
Topic: Mcb compilations
Type: Objective
Difficulty: Not specified
Question 841 of 984
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