Virus & Microorganism Quiz

1Viruses attack

A. bacterial cells.B. animal cells.C. plant cells.D. all types of cells.

2Viruses are considered to be nonliving because they

A. cannot multiply.B. are not cells.C. produce wastes.D. are always active.

3In order to multiply, a virus must

A. conjugate with another virus.B. manufacture extra food.C. invade a host cell.D. remain hidden.

4Which of the following is NOT a characteristic of fungi?

A. heterotrophB. reproduce with sporesC. makes its own foodD. eukaryotes

5Which of the following is a characteristic of all protists?

A. unicellularB. eukaryotesC. heterotrophD. multicellular

6What provides energy for a virus?

A. FoodB. Its hostC. The sunD. A parasite

7How does a vaccine work?

A. It activates the body’s natural defenses.B. It weakens the cell walls of bacteria causing the

cell to burst.C. It attacks antibiotic-resistant bacteria.D. It treats the symptoms of an infection.

8Which of the following statements about bacteria is

false?

A. All bacteria cause disease.B. Bacteria help in food production.C. Bacteria are used to make medications.D. Bacteria can be helpful in environmental cleanup.

9Most bacteria are surrounded by a rigid protective

structure called theA. cell wall.B. cell membrane.C. protein coat.D. flagellum.

1010. Why are viruses like parasites?

A. They multiply.B. They have their own DNA.C. They use energy to develop.D. They destroy the cells they enter.