Ribulose bisphosphate is a:
Correct answer: D. Carbohydrate
- A. Protein
- B. Nucleic acid
- C. Lipid
- D. Carbohydrate
Explanation
Ribulose 1,5-bisphosphate (RuBP) is indeed a carbohydrate. It is a five-carbon sugar (ketopentose) with two phosphate groups and serves as the primary CO₂ acceptor in the Calvin cycle of photosynthesis. This makes it essential in the process of carbon fixation. The other options are incorrect because RuBP is not a protein, nucleic acid, or lipid. Proteins are made of amino acids, nucleic acids are composed of nucleotides, and lipids consist of fatty acids and glycerol.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
Practise Bioenergetics
1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Bioenergetics questions
Which one is not correct about chlorophyll b?
The difference between non-cyclic and cyclic phosphorylation:
Energy transformation in biological systems is called
The first stable compound during light-independent reactions contains:
Enzymes required for the respiratory chain are present on/in:
During the Krebs cycle, the carbon number is reduced by decarboxylation. It is repeated _ time/s during one cycle.