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TLS Online TPP Program

#Question id: 14969

 A new drug is developed that targets and binds to the lipid A portion of LPS from Gram negative bacterial cells. This drug shows a high degree of activity and binding in a test tube setting against purified lipid A. Based on this information,

#Unit 2. Cellular Organization
  1. We should fast track this drug and get it out to physicians immediately to help prevent toxic/septic shock in humans.
  2. We should do some animal testing with whole Gram-negative cells and the drug before we jump to any conclusions.
  3. We should next proceed by moving to testing in a test tube using whole Gram-negative cells to see if it binds with the same strength.
  4. We should abandon the drug entirely binding to lipid A won't kill the bacteria, so the drug is useless to develop further
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TLS Online TPP Program

#Question id: 11236

#Unit 9. Diversity of Life Forms

Which two structures play direct roles in permitting bacteria to adhere to each other, or to other surfaces?

1.  capsules

2.  endospores

3.  fimbriae

4.  plasmids

5.  flagella
TLS Online TPP Program

#Question id: 11237

#Unit 9. Diversity of Life Forms

Which statement about the genomes of prokaryotes is correct?
TLS Online TPP Program

#Question id: 11238

#Unit 9. Diversity of Life Forms

If a bacterium regenerates from an endospore that did not possess any of the plasmids that were contained in its original parent cell, the regenerated bacterium will probably
TLS Online TPP Program

#Question id: 11239

#Unit 9. Diversity of Life Forms

Which of the following is composed almost entirely of peptidoglycan?
TLS Online TPP Program

#Question id: 11240

#Unit 9. Diversity of Life Forms

 Which of the following requires ATP to function, and permits some species to respond to taxes (plural of taxis)?
TLS Online TPP Program

#Question id: 11241

#Unit 9. Diversity of Life Forms

Not present in all bacteria, this structure enables those that possess it to germinate after exposure to harsh conditions, such as boiling: