Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Nature & AnimalsIn CAM plants, which mechanism limits rubisco's functionality under heat stress?
A)Photorespiration overwhelms carbon fixation✓
B)Stomata remain closed continuously
C)RuBP regeneration becomes inefficient
D)CAM cycle operates at max rate
💡 Explanation
Under heat stress, photorespiration increases because oxygen, rather than carbon dioxide, binds with rubisco, therefore limiting the Calvin cycle activity; rather than efficient fixation, less sugar is produced despite sufficient resources.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Nature & Animals →- Which physiological outcome occurs when a marine mammal initiates peripheral vasodilation in frigid waters?
- Which mechanism enables soaring birds to maintain altitude in ridge lift conditions?
- Which process initiates navigation following displacement beyond foraging territory relying purely on scent?
- What outcome occurs when ground squirrels arouse from hibernation and circulating norepinephrine triggers futile cycling?
- Which aerodynamic effect causes increased power expenditure during hovering flight for hummingbirds exposed to turbulent air?
- Which outcome in redwood trees results when high evaporative demand reduces water column pressure?
