Question
The regeneration phase of the Calvin Cycle, where five 3-carbon sugars become three 5-carbon sugars, shares many intermediates with more familiar biochemical pathways. For 10 points each:
[10h] The end product of the regeneration phase is this 5-carbon sugar, which is then phosphorylated to restart the Calvin Cycle. This is also the end product of the oxidative phase of the pentose phosphate pathway.
ANSWER: ribulose-5-phosphate [or Ru5P or RuP]
[10e] The regeneration phase shares intermediates like glucose-6-phosphate and fructose-6-phosphate with both the pentose phosphate pathway and this other pathway, the first phase of cellular respiration.
ANSWER: glycolysis [accept Embden–Meyerhof–Parnas pathway or EMP]
[10m] The regeneration phase begins with this 3-carbon sugar’s conversion to DHAP, which is then combined with another copy of this sugar by aldolase to form fructose 1,6-bisphosphate. Those reactions are both the reverse reactions of reactions producing this first 3-carbon sugar intermediate in glycolysis.
ANSWER: G3P [or glyceraldehyde 3-phosphate; accept 3-phosphoglyceraldehyde; accept PGAL, GA3P, GADP, GAP, or GALP; prompt on triose phosphate or TP]
<Science - Biology>
Summary
| 2024 ARGOS @ Brandeis | 03/22/2025 | Y | 3 | 10.00 | 67% | 33% | 0% |
| 2024 ARGOS @ Chicago | 11/23/2024 | Y | 6 | 13.33 | 83% | 50% | 0% |
| 2024 ARGOS @ Christ's College | 12/14/2024 | Y | 3 | 3.33 | 33% | 0% | 0% |
| 2024 ARGOS @ Columbia | 11/23/2024 | Y | 3 | 3.33 | 33% | 0% | 0% |
| 2024 ARGOS @ McMaster | 11/17/2024 | Y | 5 | 14.00 | 100% | 40% | 0% |
| 2024 ARGOS @ Stanford | 02/22/2025 | Y | 3 | 13.33 | 67% | 67% | 0% |
| 2024 ARGOS Online | 03/22/2025 | Y | 3 | 10.00 | 67% | 33% | 0% |
Data
| Grzegorz Brzęczyszczykiewicz | Cambridge | 0 | 10 | 0 | 10 |
| Limp Franceskit | Cien Años de Quizboledad | 0 | 0 | 0 | 0 |
| Defying Suavity | Simple Vibes | 0 | 0 | 0 | 0 |