RuBP, the molecule that starts the Calvin cycle, has how many carbon atoms?
ASeven
BFive
CNine
DFour
Answer & Solution
Correct answer: B. Five
1. It is flanked by two phosphates.
2. RuBP has five carbons.
3. Adding CO2 gives two three-carbon 3-PGA.
_Source: OpenStax Biology 2e, Chapter 8, Photosynthesis (CC BY 4.0)._
Related questions
Cacti conserve water by fixing and storing CO2 temporarily at:How many turns of the Calvin cycle are needed to produce one three-carbon G3P for export?The enzyme that catalyses the reaction between carbon dioxide and RuBP is:The flow of hydrogen ions through ATP synthase from the thylakoid lumen to the stroma is cAbout what share of oxygen made in a leaf is used by its own mitochondria?The reaction center of photosystem II is called:In photosystem II, the electron lost by the reaction center is replaced by splitting:Photosystems are numbered by: