Consider the C5 convertase. Neither the Alternative nor the Classical pathway has ______ as one of the C5 convertase peptide components.1 pointC2aC3bC4bC5bBb

To determine which component is not part of the C5 convertase for either the Alternative or Classical pathway, we need to consider the components involved in each pathway:

1. Alternative Pathway C5 Convertase: This typically consists of C3b and Bb (a fragment of factor B). The alternative pathway does not use C2 or C4 components.

2. Classical Pathway C5 Convertase: This is generally formed by C4b, C2a, and C3b. The classical pathway does not use Bb.

From the options given:

• C2a: Present in the Classical pathway C5 convertase.
• C3b: Present in both pathways.
• C4b: Present in the Classical pathway C5 convertase.
• C5b: Not relevant to the convertase formation, as it is a downstream product.
• Bb: Present in the Alternative pathway C5 convertase.

Based on this analysis, the component that is not included in either pathway's C5 convertase is:

Final Answer: C5b