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TLS Online TPP Program

#Id: 1344

RAS is connected to the membrane by a prenylated (lipid) tail.

#Unit 4. Cell Communication and Cell Signaling #RTK #Part B Pointers
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TLS Online TPP Program

#Id: 10315

#Unit 4. Cell Communication and Cell Signaling

Cancer cells influence the behavior of the fibroblasts and immune cells.
TLS Online TPP Program

#Id: 10350

#Unit 4. Cell Communication and Cell Signaling

B cells migrate to the lymphoid follicles. They are directed there by chemokine interactions between CXCL13, which is secreted by follicular dendritic cells (FDCs).
TLS Online TPP Program

#Id: 4693

#Unit 11. Evolution and Behavior

Altruism

Altruistic acts serve to benefit the individual’s close relatives, or kin. They enhance the fitness of other individuals—their offspring—at a cost to themselves.
TLS Online TPP Program

#Id: 6945

#Unit 8. Inheritance Biology

In prophase I of meiosis, an inversion loop forms.
TLS Online TPP Program

#Id: 2352

#Unit 5. Developmental Biology

If a flatworm is cut into three pieces, the middle piece will regenerate a head from its anterior end and a tail from its posterior end.