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Question #45233
The Question
An experimental condition drastically increases the incorporation of highly unsaturated fatty acids into the plasma membranes of vascular smooth muscle cells, inducing a state of hyper-fluidity. Considering the mechanism of action of Atrial Natriuretic Factor (ANF), which of the following is the most likely physiological consequence?
Options
- A.
Inability of the membrane-bound ANF receptor to maintain its active conformation, resulting in sustained systemic hypertension.
- B.
Enhanced lateral mobility of the ANF receptor, leading to amplified intracellular cGMP production and severe hypotension.
- C.
Increased membrane permeability allowing ANF to cross the lipid bilayer and directly interact with intracellular receptors.
- D.
Hyper-activation of the ANF signaling cascade, leading to excessive sodium excretion and a drastic drop in blood pressure.
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
Lipid Amphipathic Nature|Atrial Natriuretic Factor (ANF)|Feedback Mechanism Loops
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often memorize that 'membrane fluidity is essential for function' (NCERT Ch 8) but fail to realize that 'hyper-fluidity' disrupts the structural integrity of transmembrane proteins.
The trap requires connecting this biophysical concept to the physiological role of ANF (NCERT Ch 22) as a peptide hormone that requires a stable membrane receptor to lower blood pressure.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biomolecules - Class 11 |
| Concept | Lipid Amphipathic Nature |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |