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TLS Online TPP Program

#Question id: 5649

From earliest to latest, the overall sequence of early development proceeds in which of the following sequences?

#Unit 5. Developmental Biology

  1. first cell division → synthesis of embryo's DNA begins → acrosomal reaction → cortical reaction

  2. cortical reaction → synthesis of embryo's DNA begins → acrosomal reaction → first cell division

  3. cortical reaction → acrosomal reaction → first cell division → synthesis of embryo's DNA begins

  4. acrosomal reaction → cortical reaction → synthesis of embryo's DNA begins → first cell division

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TLS Online TPP Program

#Question id: 1169

#Unit 4. Cell Communication and Cell Signaling

A loss-of-function mutation in which of the following would inhibit TGFβ signaling?
TLS Online TPP Program

#Question id: 1170

#Unit 4. Cell Communication and Cell Signaling

A gain-of-function mutation in which of the following would promote malignancy in cells whose proliferation is inhibited by TGFβ?
TLS Online TPP Program

#Question id: 1171

#Unit 4. Cell Communication and Cell Signaling

Which of the following receptors binds TGFβ?
TLS Online TPP Program

#Question id: 1172

#Unit 4. Cell Communication and Cell Signaling

TGF-β normally promotes:
TLS Online TPP Program

#Question id: 1173

#Unit 4. Cell Communication and Cell Signaling

Which of the following not contain(s) an SH2 domain?
TLS Online TPP Program

#Question id: 1174

#Unit 4. Cell Communication and Cell Signaling

Binding of erythropoietin to its extracellular receptor engages which of the following signaling pathways?

a. JAK/STAT                                                  b. Ras/MAP kinase

c. PI-3 kinase                                                  d. TGF-β