TLS Online TPP Program

#Question id: 11092


Which statement is the most accurate definition of external respiration?

#Part-B Specialized Branches in Biotechnology
  1. Bulk flow (convection) of air or water to and from the gas-exchange membrane.
  2. The process by which O2 is transported to the gas-exchange membrane from the environmental medium and by which CO2 is transported away from the membrane into the environmental medium.
  3. The process by which CO2 is transported to the gas-exchange membrane from the environmental medium and O2 is transported away from the membrane into the environmental medium.

  4. Diffusion of O2 and CO2 across the gas exchange membrane.
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TLS Online TPP Program

#Question id: 5249

#Part-A Aptitude & General Biotechnology

What is the best explanation for why Bernard Davis didn't observe generalized transduction in his U tube experiments?

TLS Online TPP Program

#Question id: 5250

#Part-A Aptitude & General Biotechnology

A researcher would like to map the location of galE and trpA genes in a new species of bacterium that appears to be closely related to E. coli. He decides to use cotransduction, and generatesnappropriate donor and recipient strains. He is disappointed when cotransduction is not seen in his experiement. What is the most reasonable explanation for this situation?

TLS Online TPP Program

#Question id: 5251

#Part-A Aptitude & General Biotechnology

What do transduction, transformation, and conjugation have in common?

TLS Online TPP Program

#Question id: 5252

#Part-A Aptitude & General Biotechnology

Which type(s) of genetic transfer lead to incorporation of new DNA into the bacterial chromosome?

I. Conjugation mediated by F factor

II. Hfr mediated conjugation

III. Transduction

IV. Transformation

TLS Online TPP Program

#Question id: 5253

#Part-A Aptitude & General Biotechnology

In a hypothetical situation, the genes for sex pilus construction and for tetracycline resistance are located together on the same plasmid within a particular bacterium. If this bacterium readily performs conjugation involving a copy of this plasmid, then the resultshould be

TLS Online TPP Program

#Question id: 5255

#Part-A Aptitude & General Biotechnology

Which of the following is a structure that permits conjugation to occur?