Chapter 19

____________ can have a genome of either RNA or DNA. a. Bacteria b. Eukaryotes c. Viruses d. Archaea

Peptidoglycan is seen only in cell walls of ______. a. retroviruses b. eukaryotes c. archaca d. bacteria

In ___________ viral DNA becomes integrated into a bacterial chromosome and is passed to descendant cells. a. binary fission b. the lytic pathway c. the lysogenic pathway d. conjugation

During HIV replication, reverse trancriptase reads viral _____________ to produce viral ______________ . a. DNA; RNA b. RNA; DNA c. RNA; proteins d. DNA; proteins

Prokaryotic conjugation is a type of __________ . a. sexual reproduction b. asexual reproduction c. horizontal gene transfer d. both b and \(c\)

______________ are oxygen-releasing photoautotrophs. a. Spirochetes b. Methanogens c. Cyanobacteria d. Bacteriophages

Vitamin-producing E. coli cells in your gut are _____________ . a. normal microbiota b. chemohererotrophs c. proteobacteria d. all of the above

A chemical that is made and released by bacteria and causes symptoms of disease is a(n) ____________ . a. endospore \(\quad\) b. endotoxin \(\quad\) c. exotoxin \(\quad\) d. vector

Infection by some ________ raises the risk of cancer. a. viruses b. cyanobacteria \(c_{*}\) archaea d. spirochetes

Eukaryotes are most closely related to ______________ . a. archaea b. bacteria c. retroviruses

Match each discase with the type of pathogen that causes it. Choices may be used more than once. a. virus b. bacteria tuberculosis AIDS influenza (flu) Lyme disease cholera

Match each group with the most suitable description. a. infect bacteria b. live in salty places c. live in hot places d. live in and on you e. release methane f. RNA genome inside a protein coat normal microbiota bacteriophages methanogens retroviruses extreme halophiles extreme thermophiles