Microbiology – McGraw Hill Connect
Microbiology, Practice Questions and
Definitions
Introduction:
This document contains a comprehensive collection of
microbiology practice questions, definitions, and answers
aligned with McGraw Hill Connect Microbiology content. It
covers core topics such as microbial structure, classification,
pathogenesis, epidemiology, immunology, and the history of
microbiology, making it suitable for exam preparation and
concept revision.
The material is presented in a question-and-answer format and
is especially useful for reinforcing terminology and
understanding key concepts commonly tested in introductory
microbiology courses.
Exam Questions and Answers:
slime layer Answer:-a glycocalyx that is unorganized and
loosely attached to the cell wall
capsule Answer:-more tightly bound to a cell than a slime
layer, denser and thicker than a slime layer. generally have
,greater pathogenicity, protect against phagocytosis (therefore
evading hosts major immune defense)
biofilm formation Answer:-collection of microbes living on a
surface in a complex community. Responsible for persistent
colonization of plastic catheters, IUDs, metal pacemakers, and
other implanted medical devices
peptidoglycan Answer:-A protein-carbohydrate compound that
makes the cell walls of bacteria rigid
in gram + cells= thick layer
in gram - cells = thin layer
gram stain Answer:-A staining method that distinguishes
between two different kinds of bacterial cell walls.
ribosomes Answer:-tiny particles composed of protein and
RNA that are the site of protein synthesis
endospores Answer:-dormant, thick-walled structures that can
survive harsh conditions
,mycolic acid Answer:-long-chained, branched fatty acids
characteristic of members of the genus mycobacterium
Medical significance of endospores Answer:-Some diseases are
related to the persistence and resistance of their spores
CapSOutCeCe Answer:-capsule, s layer, outer membrane, cell
wall, cell cytoplasmic membrane
plasmid Answer:-A small ring of DNA that carries accessory
genes separate from those of the bacterial chromosome
gram positive cell envelope includes Answer:-thick layer of
peptidoglycan, cell membrane, teichoic acids, and lipoteichoic
acids
gram negative cell envelope includes Answer:-thin layer of
peptidoglycan, periplasmic space, lipopolysaccarides, cell
membrane and outer membrane
Which organisms behave like protozoa during one phase of the
life cycle and like fungi in another phase of the life cycle?
Answer:-Slime Molds
, True or false: Cellular microbes are often arranged in
multicellular complexes with differentiated tissues. Answer:-
False
Which four of the following entities are cellular? Answer:-
fungi
protists
archaea
bacteria
Joseph Lister is best known for his work with Answer:-
Antiseptics
Who invented the dish used when preparing solid media
plates? Answer:-Petri
Which is the best description of microorganisms? Answer:-
Organisms too small to be seen clearly by the unaided eye
Which four of the following entities are generally included in
the field of microbiology? Answer:-bacteria
Microbiology, Practice Questions and
Definitions
Introduction:
This document contains a comprehensive collection of
microbiology practice questions, definitions, and answers
aligned with McGraw Hill Connect Microbiology content. It
covers core topics such as microbial structure, classification,
pathogenesis, epidemiology, immunology, and the history of
microbiology, making it suitable for exam preparation and
concept revision.
The material is presented in a question-and-answer format and
is especially useful for reinforcing terminology and
understanding key concepts commonly tested in introductory
microbiology courses.
Exam Questions and Answers:
slime layer Answer:-a glycocalyx that is unorganized and
loosely attached to the cell wall
capsule Answer:-more tightly bound to a cell than a slime
layer, denser and thicker than a slime layer. generally have
,greater pathogenicity, protect against phagocytosis (therefore
evading hosts major immune defense)
biofilm formation Answer:-collection of microbes living on a
surface in a complex community. Responsible for persistent
colonization of plastic catheters, IUDs, metal pacemakers, and
other implanted medical devices
peptidoglycan Answer:-A protein-carbohydrate compound that
makes the cell walls of bacteria rigid
in gram + cells= thick layer
in gram - cells = thin layer
gram stain Answer:-A staining method that distinguishes
between two different kinds of bacterial cell walls.
ribosomes Answer:-tiny particles composed of protein and
RNA that are the site of protein synthesis
endospores Answer:-dormant, thick-walled structures that can
survive harsh conditions
,mycolic acid Answer:-long-chained, branched fatty acids
characteristic of members of the genus mycobacterium
Medical significance of endospores Answer:-Some diseases are
related to the persistence and resistance of their spores
CapSOutCeCe Answer:-capsule, s layer, outer membrane, cell
wall, cell cytoplasmic membrane
plasmid Answer:-A small ring of DNA that carries accessory
genes separate from those of the bacterial chromosome
gram positive cell envelope includes Answer:-thick layer of
peptidoglycan, cell membrane, teichoic acids, and lipoteichoic
acids
gram negative cell envelope includes Answer:-thin layer of
peptidoglycan, periplasmic space, lipopolysaccarides, cell
membrane and outer membrane
Which organisms behave like protozoa during one phase of the
life cycle and like fungi in another phase of the life cycle?
Answer:-Slime Molds
, True or false: Cellular microbes are often arranged in
multicellular complexes with differentiated tissues. Answer:-
False
Which four of the following entities are cellular? Answer:-
fungi
protists
archaea
bacteria
Joseph Lister is best known for his work with Answer:-
Antiseptics
Who invented the dish used when preparing solid media
plates? Answer:-Petri
Which is the best description of microorganisms? Answer:-
Organisms too small to be seen clearly by the unaided eye
Which four of the following entities are generally included in
the field of microbiology? Answer:-bacteria
