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TLS Online TPP Program

#Question id: 1032

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is if adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?

#XL - T Zoology

  1. The penicillin wouldn't affect the Archaea because it prevents crosslinking of peptidoglycan-Archaea don't have this compound in their cell walls.

  2. The penicillin will inhibit cell wall formation in the Archaea, killing them.

  3. The penicillin will slow down the growth of the Archaea by damaging the cell wall, but they will still be able to grow somewhat.

  4. The penicillin will enhance the growth of the Archaea by providing a rich nutrient source.

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TLS Online TPP Program

#Question id: 1727

#XL - Q Biochemistry

Which of the following statements is TRUE of CD4?
TLS Online TPP Program

#Question id: 15255

#XL - S Microbiology

Small organic molecules that usually make up all or part of enzyme cofactors and only very small amounts sustain growth
TLS Online TPP Program

#Question id: 4563

#XL - S Microbiology

If ʺxʺ indicates the location of fossils of two closely related species, then fossils of their most-recent common ancestor are most likely to occur in which stratum?
TLS Online TPP Program

#Question id: 8909

#XL - T Zoology

Which of the following terms or structures is properly associated only with animals?
TLS Online TPP Program

#Question id: 19660

#XL - P Chemistry

When ethanol combines with PCl5, it produces three products: chloroethane, hydrochloric acid, and ______. What is the third item on the list?