Interferon $\alpha$ Is a Protein That… $\alpha$ ,And Inhibits Translation of MRNAs

question 1

Multiple Choice

Interferon $\alpha$ is a protein that….

• A)binds to a cell surface receptor and induces the expression of new cellular genes.
• B)binds to a viral peptide and presents it to the cytotoxic T lymphocytes.
• C)degrades viral and cellular mRNAs after it has been activated by dsRNA.
• D)binds to the surface of a virion and prevents it from attaching to the host cell.
• E)phosphorylates proteins,like eIF2\(\alpha\),and inhibits translation of mRNAs.

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A theory that states the exchange rates between two currencies are in equilibrium when their purchasing power is the same in both countries.