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Round 7: Tossup 1

Questions 1. The glutathione-ascorbate cycle rids the body of this molecule and its derivatives. This molecule is released in the conversion of glycolate to glyoxylate, the latter of which names (-5[1])an analog of the TCA in the plant version of a certain organelle. The metalloenzyme superoxide dismutase releases (15[1])oxygen and this molecule as a byproduct. Derivatives of this molecule (0[1])name a structure that performs very (*) long-chain fatty acid oxidation. Homolytic cleavage of this molecule produces (10[1])a pair of highly damaging hydroxyl radicals. This ROS is decomposed into water and oxygen gas by the enzyme catalase. (10[1])For 10 points, name this molecule with formula H2O2. ■END■

ANSWER: hydrogen peroxide [accept H2O2 before read; prompt on peroxisome; anti-prompt on peroxides by asking “what is the simplest molecule of that type?”]
<Science - Biology, Rohan Ganeshan> | VAULT II Packet 07
= Average correct buzzpoint

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Buzzes

PlayerTeamOpponentBuzzpointValue
Zhangir SatzhanovBirmingham AOxford30-5
Rosaline DaffinSouthamptonBirmingham B4815
Tahira AbdulOxfordBirmingham A590
Brian ChauCambridgeSouthperial7510
William TurnerBathWarperial9510

Summary

TournamentEditionMatchHeardConv. %Power %Neg %Avg. Buzz
VAULT II at Georgia Tech2026-01-24✕6100%33%50%70.83
Triangle Cup2026-03-13✕3100%0%33%94.00
VAULT II at Eden Prairie HS2026-03-13✕3100%33%0%79.33
VAULT II at McGill2026-03-13✕4100%0%0%86.75
VAULT II at UCSB2026-03-13✕5100%40%40%77.60
VAULT II Northern UK2026-04-24✓3100%0%33%105.00
VAULT II Southern UK2026-04-24✓475%25%25%72.67
VAULT II at Harvard2026-04-30✕3100%33%0%68.00
VAULT II at MINT2026-06-19✕5100%0%20%97.60
VAULT II Stanford Online2026-07-17✕8100%50%13%57.50