A) Microbial cells acquire food, gain energy to build themselves, and respond to environmental change.
B) Most single-celled organisms require a microscope to render them visible, but some bacterial cells are large enough to be seen with naked eyes.
C) Microbes function as individual entities.
D) Many microbes form complex multicellular assemblages.
E) Viruses are not considered microbial cells.

A) seventeenth
B) eighteenth
C) nineteenth
D) twentieth
E) twenty-first

A) boiling
B) pasteurization
C) filter sterilization
D) autoclaving
E) irradiation