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TLS Online TPP Program

#Question id: 7120

Which of the following is the only true statement regarding compaction in the mouse embryo?

#Unit 5. Developmental Biology
  1. Compaction involves the activation of cadherins, resulting in an increase in cell-cell adhesion among the 8 cells of the embryo.
  2. Compaction involves a polarization of the cells of the embryo, such that ions can be pumped from the outer surface of the embryo into the central cavity, resulting in an influx of water into the central cavity and formation of the blastocoel.
  3. Compaction gives subsequent cell divisions an orientation, such that cell divisions that occur tangential (parallel) to the cell surface will result in one cell being inside the embryo, where it can contribute to the inner cell mass.
  4. All of the above are true of compaction in the mouse embryo.
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TLS Online TPP Program

#Question id: 1763

#Unit 4. Cell Communication and Cell Signaling

Which of the following cytokines can mediate release of acute phase proteins from the liver?
TLS Online TPP Program

#Question id: 1764

#Unit 4. Cell Communication and Cell Signaling

Which of the following is NOT a feature of germinal center B-cells?
TLS Online TPP Program

#Question id: 1765

#Unit 4. Cell Communication and Cell Signaling

Low amounts of antigen:
TLS Online TPP Program

#Question id: 1766

#Unit 4. Cell Communication and Cell Signaling

Which of the following antibody is prominent antigen receptor expressed on B Cells?
TLS Online TPP Program

#Question id: 1767

#Unit 4. Cell Communication and Cell Signaling

Which of the following immunoglobulin is the most abundant immunoglobulin in newborns?
TLS Online TPP Program

#Question id: 1768

#Unit 4. Cell Communication and Cell Signaling

Which of the following mediates type 2 hypersensitivity reaction?