Question
This technique prepares cultures by using an inoculation loop to dilute an inoculum over successive sections of a Petri dish. For 10 points each:
[10m] Name this technique, contrasted with spreading, that yields a namesake pattern on an agar-containing dish.
ANSWER: streaking
[10e] Prior to streaking, agar is often treated with cycloheximide in order to eliminate eukaryotic microbes from this kingdom that includes yeasts and molds.
ANSWER: Fungi [or fungus]
[10h] This unit is the number of distinct microbial masses in a dish. This unit is typically given as a ratio with the dilution factor in milliliters because it is calculated in a dish that is sufficiently diluted to count microbial masses manually.
ANSWER: CFUs [or colony-forming units; prompt on answers describing the number of colonies]
<Science - Biology>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 42 | 13.81 | 100% | 26% | 12% |