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Mitochondria
(Single Best Answer) Question 1: In apoptosis, Apaf-1 is activated by release of which of the following substances from the mitochondria ?
A) Bcl-2
B) Bax
C) Bcl-XL
D) Cytochrome C
Answer (Select an option above to get the answer):
(Single Best Answer) Question 2: All of the following statements are true regarding reversible cell injury, except ?
A) Formation of amorphous densities in the mitochondrial matrix
B) Diminished generation of adenosine triphosphate (ATP)
C) Formation of blebs in the plasma membrane
D) Detachment of ribosomes from the granular endoplasmic reticulum
Answer (Select an option above to get the answer):
(Single Best Answer) Question 3: A one year old boy presented with hepatosplenomegaly and delayed milestones. The liver biopsy and bone marrow biopsy revealed presence of histiocytes with PAS-positive. Diastase-resistant material in the cytoplasm. Electron-microscopic examination of these histiocytes is most likely to reveal the presence of ?
A) Birbeck granules in the cytoplasm
B) Myelin figures in the cytoplasm
C) Parallel rays of tubular structures in lysosomes
D) Electron dense deposit in the mitochondria
Answer (Select an option above to get the answer):
(Single Best Answer) Question 4: Mitochondria is involved in all of the following, except ?
A) ATP production
B) Apoptosis
C) Tricarboxylic acid cycle
D) Fatty acid biosynthesis
Answer (Select an option above to get the answer):
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