introduction to bacteria Flashcards
what are the components of a bacterium
flagellum, fimbrae, capsule, cell wall, no nucleus, cytoplasm
what does gram negative have that gram positive doe not?
outer membrane liposaccharides
what colour is gram positive and what colour is gram negative
purple and negative red
what shape is cocci
spherical
what shape is bacilli
rod shaped
what are preset on the cell surface
membrane, penicillin binding proteins cross links, peptidoglycan, liposaccharides
what is the purpose of rigid capsules
protects it from being eaten
what is the purpose of slimy capsules
form strong biofilms and engulfs
what are the four types of flagellum
A-Monotrichous Vibrio cholerae
B-Lophotrichous Spirillum spp
C-Amphitrichous Rhodospirillum rubrum
D-Peritrichous
what is the purpose of fimbriae
adherence
what colour is non-sporulating cells
dark blue
what is the bridge between plasmids called
pilus
what are F+ plasmids
plasmids that have the F cell they are the donor
how are bacterial genetics replicated?
binary fission
what causes genetic variation
spontaneous mutation and transfer of DNA
