A virus is pretty simple. It consists of only a nucleic acid, either DNA or RNA, surrounded by a protein coat called a _______.

Viruses are not _____, and scientists debate whether they are even alive.

Most viruses are so small that cannot be seen even with a ______ microscope.

Viruses cannot ________ on their own.

To “live” a virus must infect a cell in another organism, called the _______ cell.

Some viruses do not kill the host cell immediately. Instead the viral DNA remains inactive for months or even years. This type of virus is called a ______virus.

The viral nucleic acid uses the cell’s own cellular machinery to make more _______.

Viruses ______ the cell by bursting it open and escaping to infect new cells.

Each time the host cell goes through mitosis, the viral DNA is replicated and passed to the _______cells.

There are several things that you can do to limit the number of viruses that infect you. One is to practice good ________.

What is one of the most effective ways to avoid illness?

Eating a balanced, nutritious diet and _____ regularly may limit the number of illnesses you suffer.

A ______ is an injection of a weakened or dead virus.

You can _______ some of the most serious viral diseases by being vaccinated against them.

Some diseases are caused by _______ genes.

Gene therapy seeks to use ______ to repair defective genes.

A vaccine stimulates the body to _______ the weakened virus.

During which viral infection cycle does the infected cell burst?

The word lysis means?

Which of the following statements is false about viruses?

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