Question Detail

MIC 121 Mcb compilations Objective Question

Question

What distinguishes a defined medium from an undefined medium?
Options
A Defined medium has known quantities of all ingredients
Correct Answer
B Undefined medium is only used for eukaryotic cells
C Defined medium is more expensive than undefined medium
D Defined medium contains complex ingredients
Correct Answer

Option A is the correct answer.

Detailed Explanation

A defined (or synthetic) medium is one in which the exact chemical composition and precise quantity of every ingredient are known. Undefined (or complex) media, in contrast, contain components like extracts or peptones whose exact chemical makeup is not fully known.

Hint

The name itself gives a clue about the precision of the medium's composition.

Question Info