Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 14433
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?

#Section 2: Evolution

  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.

More Questions
TLS Online TPP Program

#Question id: 11510

#Section 2: Evolution

Life history trait varies environmental condition, both survivorship and fecundity is habitat dependent in practice but intrinsic rate of increase can change as environmental change. Following life history trait is characteristic of r-selected species?

A) Later age at first reproduction                    B) Long generation time

C) Multiple broods per life spans                    D) Large number of offspring per brood
TLS Online TPP Program

#Question id: 11511

#Section 2: Evolution

A metapopulation is
TLS Online TPP Program

#Question id: 11512

#Section 2: Evolution

The mortality rate of organisms following a type iii survivorship curve is
TLS Online TPP Program

#Question id: 11513

#Section 2: Evolution

Organisms whose life history adaptation is called semelparity
TLS Online TPP Program

#Question id: 11514

#Section 2: Evolution

Which of the following is not an outcome of high population density?
TLS Online TPP Program

#Question id: 11515

#Section 2: Evolution

The statistical study of populations is called