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;
10 Cards in this Set
- Front
- Back
Function and chemical composition of bacterial structure: Peptidoglycan
|
Function:
1. Rigid support 2. Protects against osmotic pressure Chemical composition: Sugar backbone with cross-linked peptide side chains |
|
Function and chemical composition of bacterial structure: Cell wall/cell membrane
|
Gram positives only
Function: Major surface antigen Chemical composition: Teichoic acid, which induces TNF and IL-1 |
|
Function and chemical composition of bacterial structure: Outer membrane
|
Gram negatives only
Function: Site of endotoxin (lipopolysaccharide) and major surface antigen Chemical composition: Lipid A induces TNF and IL-1, and polysaccharide is the antigen |
|
Function and chemical composition of bacterial structure: Plasma membrane
|
Function: Site of oxidative and transport enzymes
Chemical composition: Lipoprotein bilayer |
|
Function and chemical composition of bacterial structure: Ribosome
|
Function: Protein synthesis
Chemical composition: 50S and 30S subunits |
|
Function and chemical composition of bacterial structure: Periplasm
|
Function: Space between the cytoplasmic membrane and outer membrane in gram-negative bacteria
Chemical composition: Contains many hydrolytic enzymes, including beta-lactamases |
|
Function and chemical composition of bacterial structure: Capsule
|
Function: Protects against phagocytosis
Chemical composition: Polysaccharide (except Bacillus anthracis which contains D-glutamate) |
|
Function and chemical composition of bacterial structure: Pilus/fimbria
|
Function: Mediates adherence of bacteria to cell surface; sex pilus forms attachment between 2 bacteria during conjugation
Chemical composition: Glycoprotein |
|
Function and chemical composition of bacterial structure: Flagellum
|
Function: Motility
Chemical composition: Protein |
|
Function and chemical composition of bacterial structure: Spore
|
Function: Provides resistance to dehydration, heat, and chemicals
Chemical composition: Keratin-like coat and dipicolinic acid |