Interferons are cytokines produced by host cells in response to intracellular infection. there are two types of interferons, type i and type ii. which of the following is a difference between these two types? choose one:

a. type i is part of innate, nonspecific immunity, while type ii is part of adaptive, specific immunity.
b. type i binds to extracellular pathogens, while type ii binds to intracellular pathogens.
c. type i includes interferon-alpha and interferon-beta, while type ii includes interferon-omega.
d. type i interferes with viral replication, while type ii activates white blood cells.

A. Type I is part of innate, nonspecific immunity, while type II is part of adaptive, specific immunity.

Explanation:

Type I interferons: Are produced early on during infection and are responsible for activation of the innate immune response, e.g Natural Killer cells.

Type II interferons: Are produced as part of the innate immune response and act as a link between innate immune response and activation of the adaptive immune response.  

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.