Packet 8: Bonus 5
Acrasins are a class of these compounds that trigger an aggregation response to form a single-cell plasmodium. For 10 points each:
[10m] Name these compounds. When attacked by predators, insects may release one of these chemical signals to alarm others to the threat.
ANSWER: pheromones [accept aggregation pheromones; accept alarm pheromones; reject “hormones”]
[10h] Acrasins are pheromones used by the “cellular” type of these amoeboid (“uh-MEE-boid”) organisms. When placed in a maze with a food source, these organisms find the shortest path by using their network of pseudopods.
ANSWER: slime molds [accept cellular slime molds or dictyostelids or Dictyostelia or Dictyosteliomycetes; accept P. polycephalum or Physarum polycephalum; reject “molds” or “water molds”]
[10e] Despite their name, slime molds do [emphasize] not belong to this taxonomical kingdom under which most other molds are classified. This kingdom also contains yeasts and mushrooms.
ANSWER: Fungi [or funguses]
<Editors, Biology> | Packet H
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 132 | 22.35 | 100% | 90% | 33% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Guelph A | McMaster B | 10 | 10 | 10 | 30 | MHE |
| Queen's A | McMaster C | 10 | 0 | 10 | 20 | ME |
| Toronto A | McMaster A | 10 | 10 | 10 | 30 | MHE |
| Toronto B | Toronto D | 10 | 0 | 10 | 20 | ME |
| Toronto F | Toronto H | 10 | 0 | 10 | 20 | ME |
| Toronto G | Waterloo C | 10 | 0 | 10 | 20 | ME |
| Toronto I | Brock A | 0 | 0 | 10 | 10 | E |
| Waterloo A | Toronto C | 10 | 0 | 10 | 20 | ME |
| Waterloo B | Toronto E | 10 | 10 | 10 | 30 | MHE |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 5 | 22.00 | 100% | 100% | 20% |
| UK (South) | UK | Y | 8 | 25.00 | 100% | 88% | 63% |
| Northern California | US | Y | 4 | 20.00 | 100% | 100% | 0% |
| Southern California | US | Y | 7 | 24.29 | 100% | 100% | 43% |
| Eastern Canada (1) | US | Y | 5 | 22.00 | 100% | 100% | 20% |
| Eastern Canada (2) | US | Y | 9 | 22.22 | 100% | 89% | 33% |
| Florida | US | Y | 4 | 17.50 | 100% | 75% | 0% |
| Great Lakes | US | Y | 11 | 23.64 | 100% | 100% | 36% |
| Lower Mid-Atlantic | US | Y | 9 | 17.78 | 100% | 56% | 22% |
| Upper Mid-Atlantic | US | Y | 12 | 21.67 | 100% | 92% | 25% |
| Midwest | US | Y | 9 | 25.56 | 100% | 100% | 56% |
| North | US | Y | 4 | 22.50 | 100% | 100% | 25% |
| Northeast | US | Y | 12 | 21.67 | 100% | 92% | 25% |
| Pacific | US | Y | 8 | 20.00 | 100% | 75% | 25% |
| South Central | US | Y | 7 | 22.86 | 100% | 86% | 43% |
| Southeast | US | Y | 13 | 23.08 | 100% | 92% | 39% |
| Upstate NY | US | Y | 5 | 26.00 | 100% | 100% | 60% |