A distinguishing characteristic of retroviruses is ______________________.

What forms can genetic material of viruses be in? Select all that apply. 

A virion is composed of a(n) __________________. 

Which of the following is NOT used to culture animal viruses?

___________________ are the proteinaceous subunits that make up the viral capsid. 

A Generalist infects many kinds of cells or many different hosts. 

What has much of 20th-century Jewish and Muslim philosophy been primarily focused on?

Which of the following was a key idea of the Enlightenment regarding human existence?

What is a defining characteristic of modern classical music (1900–present)?

What was a central belief of Romanticism in contrast to Enlightenment thinking?