Bacteria Cell Flashcards
(parts of flagella)
Long, thin, helical structure composed of proteins
Filament
(parts of flagella)
curved sheath
Hook
(parts of flagella)
stack of rings firmly anchored in cell wall
Basal body
(flagellar arrangement)
Single flagellum at one end
Monotrichous
(flagellar arrangement)
Small bunches arising form one end of cell
Lophotrichous
(flagellar arrangement)
Flagella dispersed over surfaced of cell
Slowest
Peritrichous
(flagellar arrangement)
Flagella at both ends of cell
Amphitrichous
Fine, hairlike bristles from the cell surface Function in adhesion to other cells and surfaces
Fimbriae
found only in Gram negative cells
joins bacterial cells for DNA transfer (conjugation)
Pili
provides strong, flexible support to keep bacteria from bursting or collapsing
Made of Peptidoglycan
Cell wall (bacteria)
Retain crystal violet and stain purple or blue after gram- staining in a laboratory test.
They have thick cell walls.
Gram positive cell wall
Lose crystal violet and stain red or pink.
Have thin walls.
Gram negative cell wall
dense gelatinous solution of sugars, amino acid, and salts
70-80% water
serves as solvent for materials used in all cell functions
Cytoplasm (bacterial cell)
single, circular, double- stranded DNA molecule that contains all the genetic information required by a cell
Chromosomes
DNA is tightly coiled around a protein, aggregated in a dense area called the……..
Nucleoid
