What is the difference between a hidden virus and an active virus?

Number and variety of living organisms includes genetic, species, and ecological types

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?