bacterial morphology questions

what is the difference in motility between spirilla and spirochetes?

SPIRILLA get their motility from FLAGELLA; whereas SPIROCHETES get their motility from an AXIAL FILAMENT that runs the length of the organism (corkscrew)

spirillum (spirilla)

loosely wound spiral or wavy line. motility is by FLAGELLA

vibrio

one-half spiral turns

streptobacillus

rod-shaped bacteria in chains

diplobacillus

rod-shaped bacteria in pairs

bacillus

single rod-shaped bacteria

streptococcus

spherical bacteria in chains

staphylococcus

spherical bacteria in grape-like clusters

diplococcus

spherical bacteria in pairs

state the three basic shapes of bacteria

spiral, coccus, and bacillus

what is the structural difference between spirilla and spirochetes?

spirilla are loosely wound; whereas spirochetes are tightly wound

spirochete

tightly wound corkscrew. motility is by AXIAL FILAMENT that runs the length of the organism (corkscrew)

coccobacillus

tiny rods which look like cocci