Get your research papers, homework and online exams done from just $8 per page

We also have verified textbook solutions at just $3 per answer; No subscription needed

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

✅ Answers (1)

Private answer

(1) (C)

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

They cannot synthesize proteins, because they lack ribosomes and must use the ribosomes of their host cells to translate viral messenger RNA into viral proteins.

(2) (D)

(D) Viruses

Viruses are infectious agents, which consist of a genome of nucleic acid (either DNA or RNA, never both) enclosed by a protein shell. A virus is not a cell. Viral DNA and RNA can (each) be either single-stranded or double-stranded

(3) (A)

(A) Bacteria

Prokaryotic cells, such as bacteria, have a free-floating chromosome that is usually circular and is not enclosed in a nuclear membrane. Instead, the DNA simply exists in a region of the cell called the nucleoid. Prokaryotic cells only have a small range of organelles, generally only a plasma membrane and ribosomes.

Marked as spam
Answered on June 24, 2020 5:05 pm

Professional Essay Helpers Online

Get your papers written by online essay writers available 24/7. Submit your assignments and get a quality plagiarism-free paper via email.

Write My Paper For Me