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TLS Online TPP Program

#Question id: 7166

Just prior to the onset of gastrulation in an embryo, the "organizer" cells are specified. If you were to experimentally block the specification of these cells, what would you expect the result to be in the developing embryo?

#Unit 5. Developmental Biology
  1. There would be no effect on development.
  2. Gastrulation would not occur, and normal development would cease.
  3. The body axes would develop normally, but the embryo would not grow appendages.
  4. The embryo would not develop an intestine, but all other organs and tissues would develop normally.
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TLS Online TPP Program

#Question id: 586

#Unit 1. Molecules and their Interaction Relevant to Biology

At the beginning of an enzyme-catalyzed reaction the ________ is negligible.
TLS Online TPP Program

#Question id: 31030

#Unit 4. Cell Communication and Cell Signaling

Match the following Gα class with their secondary messengers.
TLS Online TPP Program

#Question id: 11358

#Unit 10. Ecological Principles

In Holling's functional responses of predators, what is the most fundamental difference between a Type I functional response versus Type II and Type III functional responses?
TLS Online TPP Program

#Question id: 1067

#Unit 4. Cell Communication and Cell Signaling

The best known chronic infection involves
TLS Online TPP Program

#Question id: 19878

#Unit 13. Methods in Biology

The gene formed by the joining of a DNA from on organism joining to the regulatory sequences of another organism known as