Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Flagellum |
Provide motility Made of filament (flagellin), hook and basal body Hook and filament rotate 360 degrees |
|
|
Flagella arrangements |
Monotrichous: single flagellum Lophotrichous: tufts at same site Amphitrichous: flagella at both ends Peritrichous: dispersed randomly |
|
|
Chemotaxis |
Flagella move bacteria toward chemical attractant (positive) Away (negative) |
|
|
Periplasmic flagella |
AKA axial filaments Used in spirochetes to enter other cells |
|
|
Glycocalyx |
Coating on the cell Protects and to attach to other surfaces Slime layer: loose shield Capsule: thick, structured layer |
|
|
Gram negative cell wall |
one layer of peptidoglycan
has outer membrane with lipopolysaccharides |
|
|
Gram positive cell wall |
Many layers of peptidoglycan, held together by teichoic acid |
|
|
Cell membrane |
"Gatekeeper" controls materials moving in and out of cell Outer to inner cell communication |
|
|
Cytoplasm |
Made of 70% water Solvent for materials in cell functions |
|
|
Ribosomes |
Made of a smaller unit and a larger unit Contains RNA Makes proteins from amino acid chains |
|
|
Inclusions |
Store nutrients or essential materials Used when environment is depleted |
|
|
Nucleoid |
Circular DNA area of the cell |
|
|
Plasmids |
Extra circles of DNA Exchange resistance to antibiotics through pili |
|
|
Pili |
Rigid tubes made of pilin Used in conjugation - exchange of DNA |
|
|
Fimbriae |
Hairlike bristles Purpose: to stick to other cells and surfaces |
