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TLS Online TPP Program

#Question id: 4619

Within six months of effectively using methicillin to treat S. aureus infections in a community, all new S.aureus infections were caused by MRSA. How can this best be explained?

#XL - T Zoology

  1. A patient must have become infected with MRSA from another community.

  2.  In response to the drug, S. aureus began making drug-resistant versions of the protein targeted by the drug.

  3. Some drug-resistant bacteria were present at the start of treatment, and natural selection increased their frequency.

  4. S. aureus evolved to resist vaccines.

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TLS Online TPP Program

#Question id: 3434

#XL - T Zoology

type of learning that can occur only during a brief period of early life and results in a behavior that is difficult to modify through later experiences is called
TLS Online TPP Program

#Question id: 2395

#XL - Q Biochemistry

Which structure is not part of the endomembrane system?
TLS Online TPP Program

#Question id: 11499

#XL - S Microbiology

Biologists have long been aware that the defunct kingdom Protista is paraphyletic. Which of these statements is both true and consistent with this conclusion?
TLS Online TPP Program

#Question id: 3905

#XL - Q Biochemistry

Which is not a property of RNA polymerase?
TLS Online TPP Program

#Question id: 5688

#XL - R Botany

Which of the following are not cause of aneuploidy