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TLS Online TPP Program

#Question id: 6957

The effect of grafting an extra piece of notochord into a dorsal position adjacent to pre-somitic mesoderm is

#Unit 5. Developmental Biology
  1. the pre-somitic mesoderm will degenerate
  2. somites will form but fail to differentiate
  3. signals from the notochord will convert presumptive dermomyotome into sclerotome
  4. the somite will be converted almost entirely to muscle-forming cells
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TLS Online TPP Program

#Question id: 15560

#Unit 12. Applied Biology

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: 15562

#Unit 12. Applied Biology

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

#Unit 12. Applied Biology

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

#Unit 12. Applied Biology

Novel antibiotic can be made by
TLS Online TPP Program

#Question id: 15604

#Unit 12. Applied Biology

The bacteria which cause septicaemia are fast becoming resistant to the antibiotics used for controlling them. Which one of the following explanations fits best?
TLS Online TPP Program

#Question id: 15605

#Unit 12. Applied Biology

The uptake of plasmid DNA into Streptomyces protoplasts is enhanced by