How is the molecule ribulose bisphosphate built?
AThree carbons flanked by one phosphate
BSix carbons flanked by two phosphates
CFour carbons flanked by three phosphates
DFive carbons flanked by two phosphates
Answer & Solution
Correct answer: D. Five carbons flanked by two phosphates
1. Ribulose bisphosphate has five atoms of carbon.
2. Those carbons are flanked by two phosphates.
3. The prefix bis in its name records the pair of phosphate groups.
4. Three carbons with one phosphate describes 3-PGA, which is the product rather than the acceptor.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.3 Using Light Energy to Make Organic Molecules_
Related questions
The light-independent reactions still depend on the light reactions because they need:Roughly what share of the oxygen produced in a leaf is used by the leaf's own mitochondriaLight of energy higher than blue damages pigment molecules in a process called:Bacteria that build sugars using energy from inorganic chemicals rather than light are:The coal and petroleum burned today store sunlight captured by photosynthesis roughly:How many turns of the Calvin cycle are needed before one G3P leaves it?The three-carbon carbohydrate that carbon dioxide is first fixed into is:The flow of hydrogen ions through ATP synthase is called: