Ücretsiz Kullanmaya Başla

Calvin cycle Original Scenario-Based Practice

Biology · Cellular Energetics · Biology · Photosynthesis

1 Biology practice questions on Calvin cycle. Questions built around original scenarios.

Layout:

Choose how questions appear in the preview and test.

Preview the questions below, then start to answer and see your results.

Questions

  1. 1.

    In an orbital botanical research dome, bioengineers cultivate a synthetic cyanobacterium engineered to scrub carbon dioxide from the spacecraft atmosphere. During an experiment, an optical filter isolates the culture so that cyclic electron transport operates at high capacity, generating abundant ATP, while non-cyclic electron flow is completely halted, totally depriving the stroma of NADPH. Under continuous carbon dioxide supply, which metabolic consequence will immediately be observed in the synthetic Calvin cycle?

    • A) RuBisCO will immediately fail to bind carbon dioxide because the fixation step directly requires NADPH to hydrolyze the substrate.
    • B) Glyceraldehyde 3-phosphate will rapidly overaccumulate because it cannot be converted into glucose without cyclic ATP.
    • C) Ribulose 1,5-bisphosphate will continuously build up to toxic levels because carbon fixation is directly driven by excess ATP.
    • D) The reduction phase will stall, leading to the accumulation of 3-phosphoglycerate and an inability to synthesize glyceraldehyde 3-phosphate.

Answers and step-by-step solutions appear after you finish the test.