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TLS Online TPP Program

#Question id: 1297

What effect might an injection of RGD peptide have on tumor cells moving through the blood/lymph system?

#Unit 4. Cell Communication and Cell Signaling

  1. block cell attachment to new tissue and therefore prevent metastasis

  2. encourage clumping of cancer cells for removal by the immune system

  3. promote tumor cell binding to platelets and potentially lead to a fatal clot

  4. block integrin-mediated cell cycle progression

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TLS Online TPP Program

#Question id: 9257

#Unit 9. Diversity of Life Forms

Which lake zone would be absent in a very shallow lake?
TLS Online TPP Program

#Question id: 9258

#Unit 9. Diversity of Life Forms

Which of the following is characteristic of most terrestrial biomes?
TLS Online TPP Program

#Question id: 9259

#Unit 9. Diversity of Life Forms

The oceans affect the biosphere in all of the following ways except
TLS Online TPP Program

#Question id: 9261

#Unit 9. Diversity of Life Forms

Which of the following statements about horizontal gene transfer is accurate?
TLS Online TPP Program

#Question id: 9262

#Unit 9. Diversity of Life Forms

The kingdom Monera was dismantled because of which of the following reasons?
TLS Online TPP Program

#Question id: 9264

#Unit 9. Diversity of Life Forms

In a comparison of birds and mammals, the condition of having four limbs is