Alexander Varshavsky discovered, the half-lives of many cytoplasmic proteins vary with the identities of their N-terminal residues via the so-called N-end rule:-

A. Destabilizing N-terminal residues Asp, Arg, Leu, Lys, and Phe have half-lives of	i. Only 2 to 3 minutes,
B. Stabilizing N-terminal residues Ala, Gly, Met, Ser, Thr, and Val have half-lives of	ii. >10 hours in prokaryotes iii. >20 hours in eukaryotes.

TLS Online TPP Program

#Question id: 20314

#Unit 7. System Physiology – Animal

Conversion of cholesterol to pregnenolone is mediated by the 

TLS Online TPP Program

#Question id: 20315

#Unit 7. System Physiology – Animal

The testes have an additional enzyme, which converts androstenedione to testosterone:

TLS Online TPP Program

#Question id: 20316

#Unit 7. System Physiology – Animal

Which of the following statements best describes Cushing's syndrome?

TLS Online TPP Program

#Question id: 20317

#Unit 7. System Physiology – Animal

Which of the following statements correctly describes the pathophysiology of Cushing's disease?

TLS Online TPP Program

#Question id: 20318

#Unit 4. Cell Communication and Cell Signaling

Which statement is not correct about bacterial quorum sensing?

TLS Online TPP Program

#Question id: 20319

#Unit 4. Cell Communication and Cell Signaling

What is the purpose of quorum sensing?