Round 7: Tossup 1

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

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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