Q. 3. Sertoli cells का प्रमुख कार्य क्या है? / What is the major function of Sertoli cells?
Anonymous Quiz
11%
टेस्टोस्टेरोन का निर्माण / Testosterone production
82%
शुक्राणुओं को पोषण और समर्थन देना / Nourishment and support of developing sperm cells
5%
अंडाणु का निर्माण / Ovum formation
3%
प्रोजेस्टेरोन का निर्माण / Progesterone production
Q. 4. Leydig cells मुख्यतः कौन-सा हार्मोन स्रावित करती हैं? / Which hormone is primarily secreted by Leydig cells?
Anonymous Quiz
20%
FSH
40%
LH
38%
टेस्टोस्टेरोन / Testosterone
3%
एस्ट्रोजन / Estrogen
Q. 5. शुक्राणु की acrosome संरचना किस organelle से बनती है? / The acrosome of sperm is derived from which organelle?
Anonymous Quiz
22%
माइटोकॉन्ड्रिया / Mitochondria
40%
गोल्जी तंत्र / Golgi apparatus
24%
लाइसोसोम / Lysosome
13%
केंद्रक / Nucleus
❤2
Q1. A cell exposed to severe DNA damage releases cytochrome c from mitochondria. Which event occurs immediately after cytochrome c enters the cytosol?
Anonymous Quiz
0%
Activation of death receptors
13%
Phosphorylation of retinoblastoma protein
88%
Formation of the apoptosome with Apaf one
0%
Activation of receptor tyrosine kinase
Q2. Which proteins directly form pores in the outer mitochondrial membrane during intrinsic apoptosis?
Anonymous Quiz
0%
Bax and Bak
20%
Bcl two and Bcl XL
80%
Apaf one and caspase nine
0%
Fas and FADD
Q3. A cell lacks functional Apaf one but releases cytochrome c normally. Which process will be impaired?
Anonymous Quiz
0%
Fas ligand binding
25%
Bax activation
75%
Mitochondrial outer membrane permeabilization
0%
Caspase nine activation
Q4. Which protein is an antiapoptotic member of the Bcl two family?
Anonymous Quiz
0%
Bid
67%
Bcl XL
33%
Bax
0%
Bim
Q5. BH3 only proteins mainly promote apoptosis by:
Anonymous Quiz
50%
Activating receptor tyrosine kinases
0%
Blocking cytochrome c release
50%
Inhibiting antiapoptotic Bcl two family proteins
0%
Degrading caspase three
Q6. The extrinsic apoptotic pathway is initiated by activation of which receptor class?
Anonymous Quiz
100%
Death receptors of the tumor necrosis factor receptor family
0%
Nuclear receptors
0%
Receptor tyrosine kinases
0%
Integrin receptors
Q7. Which adaptor protein recruits procaspase eight to activated Fas receptors?
Anonymous Quiz
33%
Grb2
67%
FADD
0%
Apaf one
0%
Pex five
Q8. What is the primary mechanism by which procaspase eight becomes active at the death inducing signaling complex?
Anonymous Quiz
0%
Binding of cytochrome c
33%
Phosphorylation by Akt
67%
Cleavage by caspase three
0%
Proximity induced dimerization and cleavage
Q9. Caspase eight can connect the extrinsic and intrinsic apoptotic pathways by cleaving which protein?
Anonymous Quiz
0%
Bid
20%
Bcl two
40%
Apaf one
40%
Caspase nine
Q10. Which caspase is an executioner caspase responsible for cleavage of many cellular proteins during apoptosis?
Anonymous Quiz
33%
Caspase two
67%
Caspase eight
0%
Caspase three
0%
Caspase nine