TEXTBOOK OF DIAGNOSTIC
MICROBIOLOGY 7TH EDITION
QUESTION BANK 2026 CHAPTERS 1
TO 41 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ Viruses. Answer: Not classified in Whittaker's five kingdoms.
◉ Fungi. Answer: Kingdom of non-photosynthetic organisms.
◉ Helminths. Answer: Worms studied in parasitology.
◉ Prokaryotes. Answer: Organisms existing for two billion years.
◉ Eukaryotes. Answer: Organisms evolved after prokaryotes.
◉ Infectious Disease. Answer: New diseases emerging every 25 years.
◉ Sterile. Answer: Free of all life forms.
◉ Microorganisms. Answer: Not all are parasites.
,◉ Control Group. Answer: Used to measure variable effects in
experiments.
◉ Hypothesis. Answer: Tentative explanation for observed phenomena.
◉ Taxonomic Hierarchy. Answer: Permanent classification of
organisms.
◉ Theory. Answer: Hypothesis supported by substantial evidence.
◉ Domains. Answer: Three: Bacteria, Archaea, Eukarya.
◉ Archaea. Answer: Live in extreme environments.
◉ Photosynthesis. Answer: Microorganisms contribute minimally to
atmospheric oxygen.
◉ Pathogen. Answer: Microorganisms causing disease in humans.
◉ Theories vs Hypotheses. Answer: Theories have more supporting
evidence.
◉ Decomposers. Answer: Microorganisms recycling nutrients from
dead matter.
,◉ Prokaryotes. Answer: Single-celled organisms without a nucleus.
◉ Eukaryotes. Answer: Organisms with complex cells containing a
nucleus.
◉ Microbial Ecology. Answer: Study of microorganisms in their
environments.
◉ Pathogenic Microorganisms. Answer: Organisms specifically causing
diseases.
◉ Decomposers. Answer: Organisms that break down dead matter.
◉ Prokaryotes. Answer: Microorganisms lacking a nucleus in cells.
◉ Pathogens. Answer: Microorganisms that cause disease in hosts.
◉ Eukaryotes. Answer: Organisms with a defined nucleus in cells.
◉ Fermenters. Answer: Microorganisms that convert sugars into
alcohol.
, ◉ Genetic Engineering. Answer: Manipulating genes of microorganisms
by humans.
◉ Microorganisms. Answer: Organisms too small to be seen unaided.
◉ Biotechnology. Answer: Using living organisms for practical
applications.
◉ Viruses. Answer: Infectious agents containing genetic material only.
◉ Antibiotics. Answer: Substances produced by microorganisms to kill
bacteria.
◉ Swan-neck Flasks. Answer: Used by Pasteur to disprove spontaneous
generation.
◉ Koch's Postulates. Answer: Criteria to establish a specific microbe-
disease link.
◉ Spontaneous Generation. Answer: Theory that life arises from
nonliving matter.
◉ Taxonomy. Answer: Science of classifying organisms into categories.
MICROBIOLOGY 7TH EDITION
QUESTION BANK 2026 CHAPTERS 1
TO 41 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ Viruses. Answer: Not classified in Whittaker's five kingdoms.
◉ Fungi. Answer: Kingdom of non-photosynthetic organisms.
◉ Helminths. Answer: Worms studied in parasitology.
◉ Prokaryotes. Answer: Organisms existing for two billion years.
◉ Eukaryotes. Answer: Organisms evolved after prokaryotes.
◉ Infectious Disease. Answer: New diseases emerging every 25 years.
◉ Sterile. Answer: Free of all life forms.
◉ Microorganisms. Answer: Not all are parasites.
,◉ Control Group. Answer: Used to measure variable effects in
experiments.
◉ Hypothesis. Answer: Tentative explanation for observed phenomena.
◉ Taxonomic Hierarchy. Answer: Permanent classification of
organisms.
◉ Theory. Answer: Hypothesis supported by substantial evidence.
◉ Domains. Answer: Three: Bacteria, Archaea, Eukarya.
◉ Archaea. Answer: Live in extreme environments.
◉ Photosynthesis. Answer: Microorganisms contribute minimally to
atmospheric oxygen.
◉ Pathogen. Answer: Microorganisms causing disease in humans.
◉ Theories vs Hypotheses. Answer: Theories have more supporting
evidence.
◉ Decomposers. Answer: Microorganisms recycling nutrients from
dead matter.
,◉ Prokaryotes. Answer: Single-celled organisms without a nucleus.
◉ Eukaryotes. Answer: Organisms with complex cells containing a
nucleus.
◉ Microbial Ecology. Answer: Study of microorganisms in their
environments.
◉ Pathogenic Microorganisms. Answer: Organisms specifically causing
diseases.
◉ Decomposers. Answer: Organisms that break down dead matter.
◉ Prokaryotes. Answer: Microorganisms lacking a nucleus in cells.
◉ Pathogens. Answer: Microorganisms that cause disease in hosts.
◉ Eukaryotes. Answer: Organisms with a defined nucleus in cells.
◉ Fermenters. Answer: Microorganisms that convert sugars into
alcohol.
, ◉ Genetic Engineering. Answer: Manipulating genes of microorganisms
by humans.
◉ Microorganisms. Answer: Organisms too small to be seen unaided.
◉ Biotechnology. Answer: Using living organisms for practical
applications.
◉ Viruses. Answer: Infectious agents containing genetic material only.
◉ Antibiotics. Answer: Substances produced by microorganisms to kill
bacteria.
◉ Swan-neck Flasks. Answer: Used by Pasteur to disprove spontaneous
generation.
◉ Koch's Postulates. Answer: Criteria to establish a specific microbe-
disease link.
◉ Spontaneous Generation. Answer: Theory that life arises from
nonliving matter.
◉ Taxonomy. Answer: Science of classifying organisms into categories.
