All endothelial cells except those in the cerebral microcirculation produce thrombomodulin,  a thrombin-binding protein, on their surfaces.

TLS Online TPP Program

#Id: 7026

#Unit 11. Evolution and Behavior

Evolution means descent with modification, or change in the form, physiology, and behavior of organisms over many generations of time. 

TLS Online TPP Program

#Id: 1559

#Unit 4. Cell Communication and Cell Signaling

Wnt proteins are synthesized in the ER & modified by the addition of lipids (palmitic and palmitoleic acid).

 

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#Id: 1571

#Unit 4. Cell Communication and Cell Signaling

In the absence of Wnts,

β-catenin is bound in a complex with Axin (a scaffold protein), APC, and kinases CK1 and GSK3.

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#Id: 7496

#Unit 4. Cell Communication and Cell Signaling

Only three of the proteins implicated in V(D)J recombination are unique to lymphocytes: RAG1, RAG2, and Terminal deoxynucleotidyl Transferase (TdT)

TLS Online TPP Program

#Id: 2050

#Unit 8. Inheritance Biology

X-Linked Dominant Trait

a. Both males and females are usually affected; often, more females than males are affected.

b. Does not skip generations. Affected sons must have an affected mother; affected daughters must have either an affected mother or an affected father.

c. Affected fathers pass the trait to all their daughters.

d. Affected mothers (if heterozygous) pass the trait to half of their sons and half of their daughters.