The outer envelope of an enveloped virus is built from membrane taken from where?

1. A virion is a nucleic acid core inside a capsid, and sometimes an outer envelope as well. 2. That envelope is made of protein and phospholipid membranes derived from the host cell. 3. The capsid is a separate protein layer under the envelope, so it is not the envelope's source. _Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 21 "Viruses", section 21.1 Viral Evolution, Morphology, and Classification_