#Question id: 16317
#Unit 7. System Physiology – Animal
#Question id: 1258
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to the desensitization mechanism of GPCR.
A. Several residues in the cytosolic domain of the β-adrenergic receptor are phosphorylated by the enzyme rhodopsin kinase.
B. β-Arrestin binds to specific phosphorylated tyrosine residues in the C-terminal segment of G protein–coupled receptors (GPCRs).
C. Clathrin and AP2, two other proteins bound by β-arrestin, promote endocytosis of the receptor.
D. β-Arrestin also functions in transducing signals from activated receptors by binding to and activating several cytosolic protein kinases like Src activates the MAP kinase pathway, leading to phosphorylation of key transcription factor.
Which of the following combination is incorrect?
#Question id: 5288
#Unit 8. Inheritance Biology
Donor strain of bacteria with His+ Ara+ Met+ Leu+ Cys+ Lys+ is infected with phages to map the donor chromosome with generalized transduction .The Phage lysate from bacterial cell is collected and use to infect second strain of bacteria that are His- Ara- Met- Leu- Cys- Lys- . Different transducing phages are selected on using different minimal media and their presence of growth (+) and absence of growth (-) given in table
|
Media |
Media supplement 0 absent /+ present |
||||||
|
1 |
His |
Ara |
Met |
Leu |
Cys |
Lys |
Growth |
|
2 |
+ |
+ |
0 |
+ |
+ |
0 |
+ |
|
3 |
0 |
+ |
+ |
+ |
+ |
0 |
+ |
|
4 |
+ |
+ |
0 |
+ |
0 |
+ |
- |
|
5 |
0 |
+ |
+ |
0 |
+ |
+ |
+ |
|
6 |
+ |
0 |
+ |
0 |
+ |
+ |
+ |
|
7 |
+ |
0 |
+ |
+ |
0 |
+ |
+ |
Which of the following is correct order of gene?
#Question id: 10214
#Unit 6. System Physiology – Plant
LHCII, one of the membrane-bound antenna pigment proteins, which can be phosphorylated and non-phosphorylated by a specific kinase present in thylakoid membrane. Which of the following statements are NOT TRUE ?
#Question id: 12100
#Unit 10. Ecological Principles