C H A P T E R 1 Bacteria Compared with Other Microorganisms

1. You’re watching a television program that is discussing viruses

called bacteriophages that can kill bacteria. Your roommate says,

“Wow, maybe viruses can be used to kill the bacteria that infect

people! You’re taking the Microbiology course now; what’s the

difference between viruses and bacteria?” Which one of the following

would be the most accurate statement to make?

(A) Viruses do not have mitochondria, whereas bacteria do.

(B) Viruses do not have a nucleolus, whereas bacteria do.

(C) Viruses do not have ribosomes, whereas bacteria do.

(D) Viruses replicate by binary fission, whereas bacteria replicate

by mitosis.

(E) Viruses are prokaryotic, whereas bacteria are eukaryotic.

1. Bacteria, fungi (yeasts and molds), viruses, and protozoa are

important causes of human disease. Which one of the following

microbes contains either DNA or RNA but not both?

(A) Bacteria

(B) Molds

(C) Protozoa

(D) Viruses

(E) Yeasts

1. Which one of the following contains DNA that is not surrounded

by a nuclear membrane?

(A) Bacteria

(B) Molds

(C) Protozoa