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TLS Online TPP Program

#Question id: 8851

Why is territoriality an adaptive behavior for songbirds maintaining populations at or near their carrying capacity?

#9. Diversity of Life Forms
  1. Songbirds expend a tremendous amount of energy defending territories so that they spend less time feeding their young and fledgling mortality increases.
  2. Only the fittest males defend territories and they attract the fittest females so the best genes are conveyed to the next generation.
  3. Songbird males defend territories commensurate with the size from which they can derive adequate resources for themselves, their mate, and their chicks.

  4. Many individuals are killed in the ritualistic conflicts that go along with territorial defense.

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TLS Online TPP Program

#Question id: 1403

#4. Cell Communication and Cell Signaling

Tumor-suppressor genes encode proteins with which of the following functions?

a. growth-promoting               b. growth-arresting                  c. pro-apoptotic

d. anti-apoptotic                      e. DNA repair
TLS Online TPP Program

#Question id: 1404

#4. Cell Communication and Cell Signaling

Which of the following are transcription factors?
TLS Online TPP Program

#Question id: 1405

#4. Cell Communication and Cell Signaling

A gain-of-function mutation in which of the following would have the same effect as a gain-of-function mutation in Ras?
TLS Online TPP Program

#Question id: 1406

#4. Cell Communication and Cell Signaling

Which of the following is a consequence of p53 stabilization?

a. stabilization of Cdc25A      b. activation of ATM                c. blocked apoptosis

d. transcription of p21                        e. DNA repair
TLS Online TPP Program

#Question id: 1407

#4. Cell Communication and Cell Signaling

Which of the following is pro-apoptotic?

a. Bax              b. Bcl-2                       c. p53              d. protein kinase B      e. PTEN
TLS Online TPP Program

#Question id: 1408

#4. Cell Communication and Cell Signaling

Human papilloma virus encodes proteins that inhibit the function of

a. Bcl-2.           b. Myc.                        c. p53.             d. PDGF receptor.      e. Rb.