Final answer:
False, Lipids and nucleic acids are typically not immunogenic unless they are part of more complex structures such as lipoproteins or nucleoproteins. Proteins, due to their structural complexity, are much more effective in eliciting an immune response.
Step-by-step explanation:
The assertion that lipids and nucleic acids are not usually immunogenic is largely true. Immunogenicity refers to the ability of a substance to provoke an immune response.
In the context of molecular biology, more complex molecules such as proteins are very effective antigens, which means they are capable of stimulating both cellular and humoral immunity. In contrast, lipids and nucleic acids typically exhibit lower immunogenicity, especially when they are not part of more complex structures such as lipoproteins or nucleoproteins.
Therefore, the answer to the question of whether lipids and nucleic acids are usually immunogenic is false; they are not typically effective at stimulating an immune response unless presented in conjunction with proteins or carbohydrates.