Question:
Zellweger syndrome is due to the absence of which organelle?
Zellweger syndrome is due to the absence of which organelle?
Show Hint
A peroxisome biogenesis disorder with very long chain fatty acid build-up.
Updated On: Jun 23, 2026
- Lysosome
- Mitochondria
- Peroxisome
- Nucleus
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Zellweger syndrome, also called cerebrohepatorenal syndrome, is a rare congenital disorder.
Step 2: It is characterized by the reduction or absence of functional peroxisomes in the cells, so option (c) is correct.
Step 3: Loss of peroxisomes impairs very long chain fatty acid breakdown and plasmalogen synthesis, leading to impaired neuronal migration, abnormal neuronal positioning, and disturbed brain development.
Step 4: Affected individuals also show reduced CNS myelin (hypomyelination). Lysosomal defects cause storage diseases, mitochondrial defects cause myopathies and encephalopathies, and nuclear loss is incompatible with cell life, so these distractors are wrong.
Step 2: It is characterized by the reduction or absence of functional peroxisomes in the cells, so option (c) is correct.
Step 3: Loss of peroxisomes impairs very long chain fatty acid breakdown and plasmalogen synthesis, leading to impaired neuronal migration, abnormal neuronal positioning, and disturbed brain development.
Step 4: Affected individuals also show reduced CNS myelin (hypomyelination). Lysosomal defects cause storage diseases, mitochondrial defects cause myopathies and encephalopathies, and nuclear loss is incompatible with cell life, so these distractors are wrong.
Was this answer helpful?
0
0
Top NEET PG Biochemistry Questions
- Which of the following clotting factors is needed for gamma-glutamyl carboxylase?
- A patient presented with diarrhea, dermatitis, and dementia. Which of the following vitamin deficiencies would you suspect in this patient?
- A young boy presents to the OPD with hypoglycemia and muscle cramps, on exertion or while playing. Then he becomes normal after resting for a while. These episodes are recurrent after a period of activity. He has decreased serum lactate and glucose levels. Which of the following diseases is he most likely to be suffering from?
- A family consumes only polished rice. Which of the following combinations of vitamin deficiency and enzymatic defect will be present in this family?
- A chronic alcoholic patient presented to the casualty with confusion, ataxia, and painful eye movements. What could be the vitamin deficiency seen in this patient?
View More Questions
Top NEET PG Questions
- A patient hailing from Delhi presents with fever, arthralgia, and extensive petechial rash for 3 days. Lab investigations revealed a hemoglobin of 9 g/ dL, a white blood cell count of 9000 cells/mm3, a platelet count of 20000 cells/mm3, and a prolonged bleeding time. The clotting time was normal. What is the most likely diagnosis?
- Which of the following statements is true about Trichomonas vaginalis?
- A lady from West Rajasthan presented with an ulcer surrounded by erythema on the right leg. Microscopy of the biopsy from the edge of the ulcer showed organisms with dark staining nuclei and kinetoplast. What is the most likely causative agent?
- A child presents with a fever and a rash. Urine examination showed cells with owl's eye appearance. What is the most likely diagnosis?
- Infection with Clonorchis sinensis is associated with an increased risk of__?
View More Questions