Packet 3: Bonus 9
This molecule binds to the regulatory subunits of protein kinase A. For 10 points each:
[10e] Identify this nucleotide second messenger created by adenylate cyclase from ATP. This molecule is in turn degraded by phosphodiesterases.
ANSWER: cyclic AMP [or cAMP or cyclic adenosine monophosphate]
[10h] Upon GPCR activation, this subunit of a heterotrimeric G protein exchanges GDP for GTP and can stimulate adenylate cyclase to raise cAMP. This subunit is ADP-ribosylated by cholera toxin and pertussis toxin.
ANSWER: alpha subunit [or G-alpha]
[10m] G protein coupled receptors characteristically cross the membrane this many times.
ANSWER: seven
<Editors, Biology> | L. Playoffs 3 (Editors 3)
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 24 | 12.50 | 67% | 50% | 8% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Brown | Maryland B | 10 | 0 | 10 | 20 | EM |
| Bruin | NYU B | 10 | 0 | 0 | 10 | E |
| Chicago B | Cornell | 10 | 0 | 0 | 10 | E |
| Columbia B | Virginia | 10 | 0 | 10 | 20 | EM |
| Georgetown | Purdue | 0 | 0 | 0 | 0 | |
| Harvard | Northwestern A | 10 | 0 | 10 | 20 | EM |
| Illinois B | Swarthmore | 10 | 0 | 0 | 10 | E |
| Johns Hopkins | Georgia Tech B | 10 | 0 | 10 | 20 | EM |
| MIT | Cambridge | 10 | 10 | 10 | 30 | EHM |
| Minnesota | Illinois A | 0 | 0 | 0 | 0 | |
| Northwestern B | UCF | 0 | 0 | 0 | 0 | |
| Ohio State | Michigan | 10 | 0 | 10 | 20 | EM |
| Penn State | Georgia Tech A | 10 | 0 | 0 | 10 | E |
| Pittsburgh | Toronto B | 0 | 0 | 0 | 0 | |
| Stanford A | Maryland A | 10 | 0 | 10 | 20 | EM |
| Stanford B | Rutgers | 0 | 0 | 0 | 0 | |
| Texas | Georgia Tech C | 10 | 0 | 10 | 20 | EM |
| Toronto A | NYU A | 10 | 0 | 10 | 20 | EM |
| UC Berkeley A | Indiana | 10 | 10 | 10 | 30 | EHM |
| UC Berkeley B | Columbia A | 10 | 0 | 0 | 10 | E |
| UCLA | WashU | 0 | 0 | 10 | 10 | M |
| Vanderbilt | British Columbia | 0 | 0 | 0 | 0 | |
| Virginia Tech | Chicago A | 10 | 0 | 10 | 20 | EM |
| Waterloo | North Carolina | 0 | 0 | 0 | 0 |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Main Site | 2026-04-17 | ✓ | 24 | 12.50 | 67% | 50% | 8% |