In Working with a Potentially New Antibiotic, You Are Attempting

question 18

Multiple Choice

In working with a potentially new antibiotic, you are attempting to determine where in prokaryotic translation this antibiotic has its effect. You have determined thus far that it interacts with a translational factor, but need to identify which one. If this antibiotic interfered with elongation, which of the following factors could be a potential site of action?

• A)IF- 3 interaction with an aminoacyl tRNA
• B)EF- Tu interaction with an aminoacyl tRNA
• C)EF- Tu placement of N- formyl met onto the ribosome
• D)EF- Ts translocation of tRNAs from the A site to the P site
• E)all of the above

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Definitions:

Spontaneous Recovery

The reappearance of a previously extinguished conditioned response after a pause.

Stray Dog

A dog that lives on the streets and is not owned or cared for by a specific person.

Extinction

The gradual reduction and eventual disappearance of a conditioned response following the removal of reinforcement.

Fear

An emotional response to perceived threats, leading to a fight-or-flight response.