Which of the following is incorrectly paired 

a. NodA is an N-acyltransferase

b. NodB is a chitin-oligosaccharide deacetylase

c. NodB is a N-acyltransferase

d. NodC is a chitin-oligosaccharide synthase

f. NodC is a chitin-oligosaccharide deacetylase

TLS Online TPP Program

#Question id: 20328

#Unit 4. Cell Communication and Cell Signaling

Acyl-homomserine lactones (AHLs) are auto-inducers used by Gram-negative bacteria to communicate. Which statements are about that Quorum sensing signaling in bacteria. 

a. transcription is activated at low cell density

b. transcription is not activated at low cell density

c. transcription is activated at high cell density

d. transcription is not activated at high cell density

e. Upon reaching a threshold concentration, AHL can bind to its receptor LuxR.

f. Upon reaching a threshold concentration, AHL can bind to Lux box.

TLS Online TPP Program

#Question id: 20329

#Unit 4. Cell Communication and Cell Signaling

What are AHL molecules?

TLS Online TPP Program

#Question id: 20330

#Unit 4. Cell Communication and Cell Signaling

What does the LuxR gene do?

TLS Online TPP Program

#Question id: 20331

#Unit 4. Cell Communication and Cell Signaling

LuxR is analogous to certain eukaryotic regulatory proteins, such as

TLS Online TPP Program

#Question id: 20332

#Unit 4. Cell Communication and Cell Signaling

What is LuxR and LuxI?

TLS Online TPP Program

#Question id: 20333

#Unit 4. Cell Communication and Cell Signaling

Choose true statements about Ax21-mediated quorum sensing;

a. It is a highly conserved sulfated peptide secreted by Xanthomonas oryzae.

b. Ax21 is sulfated by RaxST, which is a putative tyrosine sulfotransferase.

c. Sulfated Ax21 is secreted via the RaxABC type I secretion system

d. Sulfated Ax21 secreted is recognized by the rice XA21 receptor.