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Question #46978
The Question
A targeted genetic mutation disrupts the CEP proteins responsible for anchoring the centriole-derived basal body to the apical plasma membrane. Which of the following represents the most accurate dual consequence of this mutation in a free-living ciliated protozoan and a human female, respectively?
Options
- A.
Inability to steer food-laden water into the gullet; failure of ovum transport through the fallopian tube.
- B.
Loss of osmoregulation via contractile vacuoles; accumulation of mucus in the alveolar exchange part of the lungs.
- C.
Arrest of cell division due to defective spindle assembly; loss of absorptive surface area in the proximal convoluted tubule.
- D.
Failure of conjugation due to macronucleus degradation; immotility of macrophages in the areolar connective tissue.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
ATP_Hydrolysis|Dyenein_Arms|Biochemical_Oxygen_Demand
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Differentiating between microtubule-based cilia (which require basal bodies) and actin-based microvilli, alongside precise anatomical mapping.
Students often fall for the 'Location Trap' by assuming alveoli or the PCT possess cilia, or confuse the structural basis of microvilli with that of cilia.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biological Classification - Class 11 |
| Concept | Protozoan Locomotory Organs |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |