TA ppt's Exam 1 Flashcards
Bacteria vs. Fungi, which one has sterols in their cytoplasmic membrane?
fungi
Bacteria vs. fungi, which one has a cell wall comprised of chitin, glucans, & mannans?
fungi
____ is the most abundant molecule found in bacteria.
protein
bacteria vs. fungi. all of this is found on the structure of _____: flagella, pili, cell walls, cytoplasmic membranes, ribosomes, cytoplasm, polysaccharides, nucleic acids, and phospholipids.
bacteria
Flagella is composed of _____ protein.
flagellin
Name the three basic components of flagella.
basal body, hook, and filament
What is leifson’s method?
a staining technique to increase effective diameter so you can see the flagella.
what is monotrichous?
bacteria w/ 1 flagella and one end
lophotrichous?
multiple flagella at one end of bacteria
amphitrichous?
one flagella at each end of the bacteria
peritrichous?
multiple flagella all around bacteria
fimbriae/pili are common on what kind of bacteria?
gram (-)
____ is shorter and stiffer then flagellum, helps to adhere bacteria to surfaces.
F or sex pilus
____ _____ is the discrete detectable layer, outside cell wall.
true capsule
Slim or mucoid appearance of colonies indicate ___ production.
capsule
B. anthracis capsule is composed of ________.
poly-D-glutamate.
what is the purpose of the cell wall?
1) protect the underlying protoplast
2) provides ligands for adherence & receptor sites for drugs or viruses
What is the main component of the cell wall that differentiates it from Archaea?
murein (unique peptidoglycan)
What are some main difference between gram (+) & gram (-)?
Gram (-): has interpeptide bonds, thin peptidoglycan, thin cell wall surrounded by outer membrane thats composed of LPS (endotoxin)
Gram (+): has interpeptide bridges, thick cell wall, contains teichoic acids
What is the toxic portion of LPS (endotoxin) called?
lipid A