Which Substance is Produced in Specific Immunity but Not in General

Question

Which substance is produced in specific immunity but not in general immunity?
A) Nitric oxide
B) siRNAs
C) Jasmonic acid
D) Phytoalexins
E) Hydrogen peroxide

Accepted Answer

siRNAs are produced in specific immunity in response to a specific pathogen or antigen, but they are not produced in general immunity, which is nonspecific and targets a wide range of pathogens. Nitric oxide, jasmonic acid, phytoalexins, and hydrogen peroxide can all be produced in both specific and general immunity.