Which of the Following Viral Proteins Controls the Types of Cells

Question

Which of the following viral proteins controls the types of cells that a retrovirus can infect?
A) Capsid protein
B) Gag proteins
C) Protease
D) Envelope protein
E) Reverse transcriptase

Accepted Answer

The envelope protein determines the hosts and cell types that a retrovirus can infect. It mediates the attachment and fusion of viral and host cell membranes.