Question
Wnt ("WINT") and Notch are pathways for the "paracrine" and "juxtacrine" types of this process, respectively. For 10 points each:
[10e] Name this general process by which cells communicate with each other and their environments. Hormones are involved in this process in which second messengers perform transduction.
ANSWER: signaling [accept paracrine signaling or juxtacrine signaling or cell signaling or cell–cell signaling or signal transduction]
[10m] Wnt signaling involves a family of these receptors called Frizzled. These GTP-hydrolyzing receptors with an acronymic name pass through the cell membrane seven times.
ANSWER: GPCRs [or G-protein-coupled receptors]
[10h] Frizzled forms a co-receptor with receptors of these particles, LRP5 and 6. ApoB blood tests measure concentrations of these particles alongside similar "intermediate" ones.
ANSWER: low-density lipoproteins [or LDLs; accept VLDLs or ULDLs or very low-density lipoproteins or ultra low-density lipoproteins; prompt on lipoproteins or cholesterols; prompt on chylomicrons by asking "to what class of structures do they belong?"]
<Science - Biology>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 42 | 10.95 | 71% | 31% | 7% |