Question:
Which one of the following is CORRECT about microbial growth medium?
Which one of the following is CORRECT about microbial growth medium?
Show Hint
Defined medium = exact chemical formula known. Complex medium = contains peptones/yeast extract.
Updated On: Jan 2, 2026
- Luria-Bertani broth is a synthetic medium
- Nutrient broth is a defined medium
- Sabouraud dextrose agar is a differential medium
- Trypticase soy agar is a complex medium
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
A complex medium contains ingredients of unknown exact chemical composition, such as peptones, yeast extract, or casein digests.
Trypticase soy agar (TSA) contains enzymatic digests of casein and soybean meal, making it chemically undefined and thus a classic example of a complex medium.
Luria-Bertani broth is also complex, not synthetic, because it contains yeast extract and tryptone.
Nutrient broth is complex, not defined, for the same reason.
Sabouraud dextrose agar is a selective medium (mainly for fungi), not differential.
Thus, the only correct statement is that Trypticase soy agar is a complex medium.
Trypticase soy agar (TSA) contains enzymatic digests of casein and soybean meal, making it chemically undefined and thus a classic example of a complex medium.
Luria-Bertani broth is also complex, not synthetic, because it contains yeast extract and tryptone.
Nutrient broth is complex, not defined, for the same reason.
Sabouraud dextrose agar is a selective medium (mainly for fungi), not differential.
Thus, the only correct statement is that Trypticase soy agar is a complex medium.
Was this answer helpful?
0
0
Top Questions on Methods in microbiology
- Koch’s postulate was established by Robert Koch while working on a disease caused by
- GATE BT - 2025
- General Biology
- Methods in microbiology
- Corynebacterium diphtheriae causes diphtheria in humans, only when this bacterium is infected by
- GATE BT - 2025
- General Biology
- Methods in microbiology
Questions Asked in GATE BT exam
- Let \( A = \begin{pmatrix} 1 & 0 & 1 \\ 0 & k & 0 \\ 3 & 0 & -1 \end{pmatrix} \). If the eigenvalues of \( A \) are -2, 1, and 2, then the value of \( k \) is __________. (Answer in integer)
- GATE BT - 2025
- Eigenvalues
- For the coupled reactions given below: Glucose 6-phosphate + H\(_2\)O → Glucose + Pi (Reaction 1)
ATP + Glucose → ADP + Glucose 6-phosphate (Reaction 2) The standard free energy change of ATP hydrolysis at 25 °C is __ kJ/mol. The equilibrium constants for Reaction 1 and Reaction 2 are 360 and 800, respectively; Gas constant \( R = 8.314 \, {J mol}^{-1} {K}^{-1} \). (Round off to two decimal places)- GATE BT - 2025
- Biochemical Techniques
- An NMR spectrometer operating at proton resonance frequency \( \nu \) of 1 GHz will have a magnetic field strength of __________ Tesla (T). The gyromagnetic ratio for proton, \( \gamma = 2.675 \times 10^8 \, {T}^{-1} {s}^{-1} \). (Round off to one decimal place)
- GATE BT - 2025
- NMR and ESR spectroscopy
- Let \( a_0 = 0 \) and define \( a_n = \frac{1}{2} (1 + a_{n-1}) \) for all positive integers \( n \geq 1 \). The least value of \( n \) for which \( |1 - a_n|<\frac{1}{2^{10}} \) is ______.
- GATE BT - 2025
- Recurrence Relations
- Two fair six-sided dice, with sides numbered 1 to 6, are thrown once. The probability of getting 7 as the sum of the numbers on the top side of the dice is ________. (Round off to two decimal places)
- GATE BT - 2025
- Statistics and Probability
View More Questions