Discussion
When a substance is added to a solid medium which inhibits the growth of unwanted bacteria but permits the growth of wanted bacteria, it is known as
Answer: D
Correct answer: selective medium
A selective medium is a solid medium containing an inhibitor - a dye, a bile salt, an antibiotic, or a high salt concentration - that stops unwanted organisms forming colonies while the wanted ones grow. The liquid counterpart is an enrichment medium.
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