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Question #46154

Difficulty: 8/10 | 🟢 Free

The Question

Arthropods utilize a highly branched tracheal system to meet the massive oxygen demands of their compound eyes, which provide mosaic vision. If a metabolic poison that specifically inhibits the $F_0-F_1$ complex is introduced into a flying insect, its ability to track rapid movements quickly fails. Which of the following best explains the primary cellular mechanism behind this sensory failure?

Options

A.
Inability to generate a proton gradient across the inner mitochondrial membrane halts ATP synthesis, preventing the photoisomerization of retinal.
B.
Failure of chemiosmotic ATP synthesis deprives the $Na^+/K^+$ pump of energy, preventing the rapid restoration of resting membrane potentials required for high-frequency action potentials.
C.
The poison blocks the terminal cytochrome c oxidase, leading to an accumulation of protons in the intermembrane space and subsequent photoreceptor apoptosis.
D.
Depletion of ATP directly prevents the opening of voltage-gated $Na^+$ channels during the depolarization phase of the action potential in the ommatidia.

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Correct Answer

Step-by-Step Solution

Explanation

How the Examiner Thinks

Evolutionary_Exception

Tackle problems where standard rules evolve or change based on specific environmental constraints.

Concepts Behind This Question

Mosaic_Vision|Photoreceptors|ATP_Synthesis_Logic

Why This Question Is Tricky

Common Mistakes

Conceptual Pivot: This question tests two major misconceptions.

First, students often forget that the actual 'energy sink' in neural conduction is the restoration of the resting potential via the Na+/K+ pump, not the depolarization phase itself.

Second, it tests the precise mechanism of respiratory inhibitors, requiring students to distinguish between blocking the Electron Transport Chain (Complex IV) versus blocking Chemiosmosis (F0-F1 ATP synthase).

Quick Facts About This Question

Question Information

Subject	Biology
Chapter	Animal Kingdom - Class 11
Concept	Arthropoda Respiratory Diversity
Difficulty	8
Cognitive Load	5
Target Solve Time	120 sec
Access	Free