Tempering temperature for agar is:
**Core Concept**
The tempering temperature for agar is an essential factor in microbiology, as it affects the growth of microorganisms and the quality of the agar medium. The ideal temperature for tempering agar is crucial to ensure that the agar is properly melted and dissolved, which in turn affects the growth of microorganisms.
**Why the Correct Answer is Right**
The correct answer is 100°C. This is because water is boiled at 100°C, and when agar is heated to this temperature, it is fully dissolved and melted. If the agar is not heated to 100°C, it may not be fully dissolved, leading to a cloudy or uneven medium. This can affect the growth of microorganisms and the accuracy of the results.
**Why Each Wrong Option is Incorrect**
**Option A:** 80°C - This temperature is too low, and the agar may not be fully dissolved, leading to a poor-quality medium.
**Option B:** 120°C - This temperature is too high, and the agar may be over-heated, leading to the degradation of the medium and affecting the growth of microorganisms.
**Option C:** 95°C - This temperature is close to the correct answer but is still too low, and the agar may not be fully dissolved.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the tempering temperature for agar should be exactly 100°C to ensure a clear and even medium. A temperature of 100°C is also crucial for the proper growth of microorganisms, and any deviation from this temperature can lead to inaccurate results.
**Correct Answer: C. 100°C**