Question
Answer the following about components of bacterial culture media, for 10 points each.
[10m] The most common medium is a mixture of agar and a broth named for this stage of a virus’s life cycle. During this phase, a virus lies dormant inside the host genome.
ANSWER: lysogeny [or lysogenic phase; or lysogenic cycle; or lysogeny broth; prompt on LB]
[10e] “Chocolate agar” supplements lysogeny broth with a lysate from these human cells, which provide the bacteria some tasty hemoglobin to feast on.
ANSWER: red blood cells [or RBCs; or erythrocytes]
[10h] To select for Gram-negative bacteria, add methylene blue and this pink acidic dye to the broth. A class of white blood cells is named for this dye, which is combined with hema·toxylin in the most common tissue stain.
ANSWER: eosin Y [or eosinophils; prompt on H & E stain]
<Andrew Wang, Science - Biology> ~19281~ <Editor: Adam Silverman>
Summary
| 2023 PACE NSC | 06/10/2023 | Y | 35 | 12.86 | 94% | 26% | 9% |
Data
| St. Mark's | Barrington A | 0 | 10 | 10 | 20 |
| Canyon Crest | Maggie Walker A | 0 | 10 | 0 | 10 |
| Maggie Walker C | Carbondale | 0 | 10 | 0 | 10 |
| Chattahoochee B | Barrington B | 0 | 10 | 0 | 10 |
| Dallas County | Solon | 0 | 10 | 0 | 10 |
| West Point | Detroit Catholic Central C | 0 | 10 | 0 | 10 |
| Detroit Country Day | Belmont | 0 | 10 | 0 | 10 |
| Thomas Jefferson B | Dunbar | 10 | 10 | 0 | 20 |
| Elkhorn North | Belvidere | 10 | 10 | 0 | 20 |
| Choate Rosemary Hall | Heights | 0 | 10 | 0 | 10 |
| Hinsdale Central | Thomas Jefferson D | 0 | 10 | 0 | 10 |
| Hunter A | Thomas Jefferson A | 0 | 10 | 10 | 20 |
| Innovation Academy A | Lincoln-Way East | 10 | 10 | 0 | 20 |
| Chattahoochee A | Irvington A | 10 | 10 | 0 | 20 |
| Mira Loma | Johns Creek A | 10 | 10 | 0 | 20 |
| Winston Churchill B | Johns Creek B | 0 | 10 | 0 | 10 |
| Lake Highland | Saint Joseph | 0 | 10 | 10 | 20 |
| Hoover B | Maggie Walker B | 0 | 10 | 0 | 10 |
| Mercer County | Rockford Auburn B | 0 | 10 | 0 | 10 |
| Mexico | Thomas Jefferson C | 0 | 0 | 0 | 0 |
| Carl Sandburg | Midtown | 0 | 10 | 0 | 10 |
| Moberly | John Adams B | 0 | 10 | 0 | 10 |
| Norris | Innovation Academy B | 0 | 10 | 0 | 10 |
| Northmont A | Parkway West | 0 | 0 | 0 | 0 |
| Detroit Catholic Central B | Northmont B | 10 | 10 | 0 | 20 |
| Richard Montgomery | Kinkaid | 0 | 10 | 0 | 10 |
| Rockford Auburn A | Winston Churchill A | 10 | 10 | 0 | 20 |
| Winnebago | Stevenson A | 0 | 10 | 0 | 10 |
| Stevenson B | Cincinnati Hills Christian | 0 | 10 | 0 | 10 |
| Troy | Plymouth | 10 | 10 | 0 | 20 |
| Detroit Catholic Central A | University Lab | 0 | 10 | 0 | 10 |
| New Brighton | Walter Payton | 0 | 10 | 0 | 10 |
| Washington | Hunter B | 0 | 10 | 0 | 10 |
| Norman | Waukee | 0 | 10 | 0 | 10 |
| Woodland | William Fremd | 10 | 10 | 0 | 20 |