What Is a Virion

question 25

Multiple Choice

What is a virion?

• A) A virus genome inside a cell.
• B) An empty capsid.
• C) A single virus particle outside a cell.
• D) An extracellular virus genome.
• E) A virus genome integrated into a host cell genome.

---

Definitions:

Predictable Environmental Cue

A predictable environmental cue is a consistent signal from the environment that organisms can use to time certain behaviors or life history events.

Circadian

Relating to biological processes that occur in a natural, cyclic pattern of approximately 24 hours.

Circannual Rhythms

Biological processes and behaviors that display an annual, or yearly, cycle.

Constant Darkness

An environmental condition characterized by the absence of light for an extended period, affecting biological rhythms and behaviors in organisms.