Packet 12: Bonus 15
Infection by Helicobacter pylori can lower the pH of this substance, leading to the formation of gastric ulcers. For 10 points each:
[10m] Name this alkaline substance secreted by foveolar cells in the stomach. This slippery substance lines the stomach and protects it from its own acid.
ANSWER: mucus [accept alkaline mucus; accept mucous membrane; accept gastric mucosa]
[10h] The maintenance of mucous membranes is supported by niacin and this fat-soluble vitamin. The “all-trans” form of a metabolite of this vitamin activates the protein rhodopsin.
ANSWER: vitamin A [accept vitamin A1 or all-trans-retinol; accept all-trans-retinal; accept all-trans-retinoic acid]
[10e] Accumulation of thick mucus in the lungs can result from the impaired secretion of this element’s anion in cystic fibrosis patients. This element and sodium form table salt.
ANSWER: chlorine [or Cl; accept chloride or Cl-]
<Editors, Biology> | Packet L
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 106 | 18.30 | 100% | 52% | 31% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Brock A | Toronto F | 0 | 0 | 10 | 10 | E |
| McMaster A | Toronto C | 0 | 0 | 10 | 10 | E |
| Queen's A | Toronto I | 10 | 10 | 10 | 30 | MHE |
| Toronto B | Waterloo A | 10 | 10 | 10 | 30 | MHE |
| Toronto D | Toronto A | 0 | 0 | 10 | 10 | E |
| Toronto E | Waterloo C | 0 | 10 | 10 | 20 | HE |
| Toronto G | McMaster B | 0 | 0 | 10 | 10 | E |
| Toronto H | McMaster C | 0 | 0 | 10 | 10 | E |
| Waterloo B | Guelph A | 10 | 0 | 10 | 20 | ME |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 5 | 18.00 | 100% | 20% | 60% |
| UK (South) | UK | Y | 8 | 16.25 | 100% | 63% | 0% |
| Southern California | US | Y | 7 | 17.14 | 100% | 43% | 29% |
| Eastern Canada (2) | US | Y | 9 | 16.67 | 100% | 33% | 33% |
| Great Lakes | US | Y | 12 | 21.67 | 100% | 67% | 50% |
| Lower Mid-Atlantic | US | Y | 6 | 18.33 | 100% | 50% | 33% |
| Upper Mid-Atlantic | US | Y | 12 | 20.83 | 100% | 67% | 42% |
| Midwest | US | Y | 9 | 18.89 | 100% | 56% | 33% |
| Northeast | US | Y | 12 | 15.00 | 100% | 25% | 25% |
| Pacific | US | Y | 9 | 16.67 | 100% | 44% | 22% |
| Southeast | US | Y | 12 | 19.17 | 100% | 58% | 33% |
| Upstate NY | US | Y | 5 | 20.00 | 100% | 100% | 0% |