Discuss the structures found in a typical virus.

Briefly explain two different mechanisms an enveloped virus uses for entry into the host cell.

Although it is well known that X-rays cause mutations, they are routinely used to diagnose medical problems, including potential tumors, broken bones, and dental cavities. So why do we still use X-rays in medicine anyway? What precautions need to be taken?

The cell is the basic unit of all living things, and viruses which are generally not considered living but have the ability to infect cells.   Describe how the structure of a virus compares to the structure of a cell.  You should explain (not list) at least two similarities and two differences between features of cells and viruses including a brief explanation of the function of those structures.  Explain why viruses need cells.