Before You Begin
Question #46848
The Question
Mitochondria are essential for glandular secretion, providing ATP for biosynthesis and the motor-protein-driven movement of vesicles. Based on the functional relationship between cellular organelles and hormone export, which of the following statements is NOT correct?
Options
- A.
The endomembrane system, responsible for the packaging and export of peptide hormones, does not include mitochondria.
- B.
In the adrenal cortex, mitochondrial dysfunction prevents cortisol release primarily by inhibiting the ATP-dependent exocytosis of secretory vesicles.
- C.
The smooth endoplasmic reticulum is the major site for the synthesis of lipid-like steroidal hormones in animal cells.
- D.
The transport of secretory vesicles containing proteinaceous hormones to the plasma membrane is an energy-intensive process.
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
Glandular Secretion Mechanism|Mitochondrial Endosymbiotic Evidence|ATP/ADP Ratio
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Failing to distinguish between the export pathways of peptide versus steroid hormones.
Students often generalize the 'endomembrane system and exocytosis' model to all glandular secretions, forgetting that lipophilic steroid hormones (like cortisol) are not stored in vesicles and simply diffuse out of the cell, making their release independent of exocytotic vesicle machinery.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Structural Organisation in Animals - Class 11 |
| Concept | Glandular Secretion Mechanism |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |