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"before nucleus". Unicellular microorganisms that do not have nucleus or organelles BUT still has DNA strands, generally enclosed by peptidoglycan bacterial cell wall and reproduce by asexual binary fission
Arrangements - when COCCI and BACILLI divide they remain attached to one another in arrangements
when COCCI and BACILLI divide they remain attached to one another in arrangements
Arrangements of Cocci
a. Diplococci - pairs after dividing
b. strepto -chain-like patterns
c. tetrads - divide in 2 planes and remain groups of 4
d. sarcinae - divide in 3 planes and remain attached n cube-like groups of 8
e. staphylococci - cocci that divide in multiple planes and form grape-like clusters
Arrangements of Bacilli
a. diplobacilli - rod shaped bacteria that divide across their short axis and remain in pairs
b. streptobacilli - bacilli that divide across their short access and remain in chains
c. coccobacilli - rod shaped bacteria that are oval and look like cocci
External to Cell wall - glycocalyx
many prokaryote secretes a sticky, gelatinous coating that surrounds that cell wall
1. ONLY when is is organizes and firmly attached externally to the cell wall
2. enhances virulence - ability to cause disease
3. ex. streptococcus pneumoniae - causes pneumococcal pneumonia
Glycocalyx Slime layer
glycolcalyx is unorganized and only loosely attached to the cell wall yet stlll resists phagatosis
motility for spirochetes
axial filaments - bundles of fibrils that arise at ends of cell beneath an outer sheath and spiral around the cell
bacterial CELL with no bacterial cell wall and are the smallest of the free-living bacterial cells
submicroscopic, acellular, obligate intracellular parasites protected by a capsid protein coat that contain nucleic acid core (EITHER DNA or RNA)
8 DOMAIN KINGDOMS DIVide CLASS ORDER to FAMILY GENUS and SPECIES
Hierarchy: Domains-Kingdoms-Division-Class-Order- Family-Genus-Species
5 KINGdoms PROK and PROT their FUNG-PaL-ANIMALS
5 kingdoms: Prokaryotes, Protista, Fungi, Plant, Animal
"before nucleus". Single cell (unicellular). No true nucleus but still have DNA enclosed by peptidoglycan cell wall. Kingdom prokaryotes. Reproduce via binary FIssion and are 3 shapes: spherical, rod, spiral
wavelength relationship of light source and resolution of microscope
shorter the waveength the greater the resolution
Gram-Positive organisms are
More susceptible to destruction by penicillin, less resistant to penicillin
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