The complement protein cascade is the same for the classical pathway,alternative pathway,and lectin pathway after the point in the cascade where the activation of ________ takes place.
A)C1
B)C2
C)C3
D)C5
E)C6

Question

Quizplus · Accepted Answer

After C3 is activated, the complement protein cascade converges and proceeds through the same steps for all three pathways. This includes the formation of the membrane attack complex (MAC), which leads to cell lysis. The activation of C1 is specific to the classical pathway, while C2, C5, and C6 are activated in both the classical and alternative pathways.

The Complement Protein Cascade Is the Same for the Classical