Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Nature & AnimalsDuring intense heat stress, which outcome occurs when stomatal closure limits carbon dioxide?
A)Photorespiration rate increases significantly.✓
B)Rubisco achieves maximum carboxylation efficiency.
C)Calvin cycle enzymes become more active.
D)ATP production increases substantially.
💡 Explanation
Limited carbon dioxide due to stomatal closure favors photorespiration because Rubisco binds to O2 rather than CO2 when CO2 levels are low inside the leaves. This therefore leads to increased photorespiration, rather than efficient carboxylation by Rubisco.
🏆 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 risk increases within a butterfly pupae upon premature ecdysone exposure?
- Which outcome occurs when a marine mammal moves from tropical water into arctic water and cannot maintain constant body temperature?
- Which outcome occurs when a lepidopteran larva experiences insufficient ecdysone during a critical instar stage?
- Which consequence results when an olfactory map lacks sufficient pheromone markers during salmon migration?
- Which physiological outcome occurs in a dog panting on a hot day via vasodilation?
- Which outcome limits the maximum glide ratio during avian dynamic soaring in turbulent air?
