Which Complement Component Is Found in Both the Classic and Alternative

question 33

Multiple Choice

Which complement component is found in both the classic and alternative pathways?

• A) C1
• B) C2
• C) factor B
• D) C3

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Definitions:

Darwinian Puzzle

A phenomenon or trait that appears to reduce the fitness of individuals, posing a question as to why it has evolved or been maintained through natural selection.

Chemicals

Substances with distinct molecular compositions that are used in or produced by chemical processes.

Echoes

Reflected sound waves that return to the listener, allowing organisms or devices to locate objects and navigate environments through echolocation.

Hypothesis

A proposed explanation for a phenomenon, made as a starting point for further investigation, which can be tested through experimentation or observation.