You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.

You next construct a MelA– MelB– double mutant, which gives the following behavior:

 

Which of your two models is consistent with this new data?

a) the MelA- MelB- double mutant is identical to the MelB- mutant

b) MelA- is epistatic to MelB-

c) MelB- is epistatic to MelA-

d) the MelA- MelB- double mutant is identical to the MelA- mutant

Which of the following is the correct prediction about the double mutants?

TLS Online TPP Program

#Question id: 21812

#Unit 12. Applied Biology

Which one of the following sensors measures torque?

TLS Online TPP Program

#Question id: 21813

#Unit 12. Applied Biology

Which one of the following sensors measures acceleration and vibration?

TLS Online TPP Program

#Question id: 21814

#Unit 12. Applied Biology

A biosensor used for the detection of S-nitrosothiols have immobilized glutathione peroxidase enzyme containing selenocysteine residue that catalytically produces 

TLS Online TPP Program

#Question id: 21815

#Unit 12. Applied Biology

A new biosensor is described for the detection of S-nitrosothiols based on their decomposition by immobilized _________enzyme containing selenocysteine residue.

TLS Online TPP Program

#Question id: 23025

#Unit 12. Applied Biology

Which bioremediation technique includes mixing of contaminated water and soil, fertilizers and carbon dioxide in a bioreactor to stimulate biodegradation

TLS Online TPP Program

#Question id: 23026

#Unit 12. Applied Biology

A process using microbes to convert toxic industrial wastes to less toxic or non-toxic compounds is