Download diplo - a prefix used with the shape name to indicate pairing of cells

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Bacterial morphology deals
primarily with how the bacteria are
shaped and how they are grouped
together.
Cocci - round
bacterial cells.
Bacilli - rod-shaped
bacterial cells.
Spirilli - spiralshaped bacterial
cells.
diplo - a prefix used
with the shape name to
indicate pairing of cells.
strepto - a prefix used
with the shape name to
indicate filaments.
staphylo - a prefix used
with the shape name to
indicate clusters.
What are some other
things that help you to
identify a bacteria?
Cell Wall – gives the
bacteria its shape;
Flagella – allows bacteria to move
from place to place (only in some);
Endospore – think of it like a
bacteria “seed” (only in some
bacillus)
Viral Structure
•DNA or RNA core surrounded by
protein shell called capsid
•Some form a lipid rich covering
around the capsid called the envelope
•Envelope may have spikes to help
chemically recognize & attach to the
host cell
•Shape determined by the capsid
Helical
Consist of nucleic
acid surrounded by
a hollow protein
cylinder or capsid Tobacco mosaic virus
and possessing a
helical (twisted)
structure.
Polyhedral
consist of nucleic acid
surrounded by a
Adenovirus
polyhedral
(many-sided)
shell or capsid.
Respiratory Infections
Enveloped
consist of nucleic
acid surrounded
Influenza A
by either
a helical or
polyhedral core
and covered by
an envelope.
Flu
Binal (complex)
have neither helical nor
polyhedral forms,
are irregular
T4 Bacteriophage
shaped, or have
complex structures
Infect bacteria