LIfe Science 6B Quiz Practice

Test Description: E

Instructions: Answer all questions to get your test result.

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

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

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

4) Viruses cannot ________ on their own.

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

6) 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.

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

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

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

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

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

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

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

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

15) Some diseases are caused by _______ genes.

16) Gene therapy seeks to use ______ to repair defective genes.

17) A vaccine stimulates the body to _______ the weakened virus.

18) During which viral infection cycle does the infected cell burst?

19) The word lysis means?

20) Which of the following statements is false about viruses?


*select an answer for all questions

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