TLS Online TPP Program

#Question id: 1899


Which of the following statements is NOT TRUE? Rejection of a second (set) skin graft from the same allogeneic donor:

#Unit 4. Cell Communication and Cell Signaling
  1. Can be blocked by azathioprine (an antimitotic agent)

  2. Proceeds at the same speed as the first graft rejection

  3. Shows specificity for the graft donor

  4. Can be transferred to a naive recipient with lymphocytes

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TLS Online TPP Program

#Question id: 12548

#Unit 10. Ecological Principles

Use the survivorship curves in Figure to answer the following questions
Which curve best describes survivorship in songbirds?

TLS Online TPP Program

#Question id: 12549

#Unit 10. Ecological Principles

Use the survivorship curves in Figure to answer the following questions

Which curve best describes survivorship that is independent of age?

TLS Online TPP Program

#Question id: 12550

#Unit 10. Ecological Principles

In order to construct a reproductive table for a sexual species, you need to

TLS Online TPP Program

#Question id: 12551

#Unit 10. Ecological Principles

Which of the following examples would most accurately measure the density of the population being studied? 

TLS Online TPP Program

#Question id: 12552

#Unit 10. Ecological Principles

To measure the population of lake trout in a 250 hectare lake, 200 individuals were netted and marked with a fin clip, and then returned to the lake. The next week, the lake is netted again, and out of the 200 lake trout that are caught, 50 have fin clips. Using the capture-recapture estimate, the lake trout population size could be closest to which of the following?

TLS Online TPP Program

#Question id: 12553

#Unit 10. Ecological Principles

Which of the following assumptions have to be made regarding the capture -recapture estimate of population size?
I. Marked and unmarked individuals have the same probability of being trapped.
II.    The marked individuals have thoroughly mixed with population after being marked.
III.  No individuals have entered or left the population by immigration or emigration, and no individuals have been added by birth or eliminated by death during the course of the estimate.