Rubisco, Oxygen, and RuBP - Biology Forum

last updated by

JackBean 14 years, 4 months ago

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- July 2, 2010 at 1:24 am #13508
  jtwin2
  Participant
  What happens when rubisco fixes oxygen to RuBP?
  Choose one answer:
  a. The product is a six-carbon molecule.
  b. The product is a four-carbon molecule.
  c. The products are a two-carbon molecule and a three-carbon molecule.
  d. The products are two three-carbon molecule.
  My answer: C
- July 2, 2010 at 3:10 am #100376
  plasmodesmata11
  Participant
  i think it’s either a or d, because when rubisco combines CO2 and RuBP it results in an unstable six carbon compund that immediately breaks down into two PGAs, which are three carbons.
- July 3, 2010 at 1:12 am #100385
  JackBean
  Participant
  plasmo: but the question is about oxygen, not CO2, so the answer is indeed c 😉
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