TEXTBOOK OF DIAGNOSTIC
MICROBIOLOGY 7TH EDITION
REVIEW SHEET 2026 CHAPTERS 1
TO 41 FULL QUESTIONS AND
VERIFIED SOLUTIONS
◉ Viroids. Answer: Naked (lacking a protein shell) pieces of RNA that
infect plants.
◉ Obligate intracellular agents. Answer: Viruses, viroids, and prions
that can only replicate inside a living host cell.
◉ Animalcules. Answer: The term used by van Leeuwenhoek to
describe the first microorganisms he observed.
◉ Peptidoglycan. Answer: A rigid component of bacterial cell walls.
◉ Thiomargarita namibiensis. Answer: A bacterium that cannot be a
eukaryote because it is only 1 mm in width.
◉ Cellulose. Answer: A major component of plants that is only directly
digested by microorganisms.
, ◉ Microorganisms. Answer: Organisms that are involved in food
production, pollution cleanup, and production of medicinal products.
◉ Biogenesis. Answer: The idea that living organisms arise from other
living organisms.
◉ Eukarya. Answer: A domain that includes organisms with membrane-
bound organelles.
◉ Carnivores. Answer: Organisms that do not directly digest cellulose.
◉ Herbivores. Answer: Organisms that can digest cellulose directly.
◉ Termites. Answer: Insects that can digest cellulose due to their
symbiotic relationship with microorganisms.
◉ Pollution cleanup. Answer: One of the activities microorganisms
participate in.
◉ Medicinal products. Answer: Products that can be produced with the
help of microorganisms.
◉ Food production. Answer: An activity that involves microorganisms
in the preparation of various food products.
MICROBIOLOGY 7TH EDITION
REVIEW SHEET 2026 CHAPTERS 1
TO 41 FULL QUESTIONS AND
VERIFIED SOLUTIONS
◉ Viroids. Answer: Naked (lacking a protein shell) pieces of RNA that
infect plants.
◉ Obligate intracellular agents. Answer: Viruses, viroids, and prions
that can only replicate inside a living host cell.
◉ Animalcules. Answer: The term used by van Leeuwenhoek to
describe the first microorganisms he observed.
◉ Peptidoglycan. Answer: A rigid component of bacterial cell walls.
◉ Thiomargarita namibiensis. Answer: A bacterium that cannot be a
eukaryote because it is only 1 mm in width.
◉ Cellulose. Answer: A major component of plants that is only directly
digested by microorganisms.
, ◉ Microorganisms. Answer: Organisms that are involved in food
production, pollution cleanup, and production of medicinal products.
◉ Biogenesis. Answer: The idea that living organisms arise from other
living organisms.
◉ Eukarya. Answer: A domain that includes organisms with membrane-
bound organelles.
◉ Carnivores. Answer: Organisms that do not directly digest cellulose.
◉ Herbivores. Answer: Organisms that can digest cellulose directly.
◉ Termites. Answer: Insects that can digest cellulose due to their
symbiotic relationship with microorganisms.
◉ Pollution cleanup. Answer: One of the activities microorganisms
participate in.
◉ Medicinal products. Answer: Products that can be produced with the
help of microorganisms.
◉ Food production. Answer: An activity that involves microorganisms
in the preparation of various food products.
