The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.

TLS Online TPP Program

#Question id: 15559

#XL - S Microbiology

The majority of the antibiotics have been isolated from 

TLS Online TPP Program

#Question id: 15560

#XL - S Microbiology

Nearly all of the genetic improvements to industrially important antibiotic-producing strains have been achieved by the use of 

TLS Online TPP Program

#Question id: 15561

#XL - S Microbiology

Which mechanism is helpful in secondary metabolite production

1. ppGpp secretion

2. Autoinducer

3. Nutrient limitation

4. Senescence genes

Which combination is incorrect  from the following.

TLS Online TPP Program

#Question id: 15562

#XL - S Microbiology

Deletion of which gene not only was accompanied by the abolition of antibiotic formation but also severely impaired growth on agar media.

TLS Online TPP Program

#Question id: 15602

#XL - S Microbiology

The antibiotic erythromycin, the immunosuppressive drug FK506, and the cholesterol-lowering drug lovastatin all belong to which class.

TLS Online TPP Program

#Question id: 15603

#XL - S Microbiology

Novel antibiotic can be made by