lec3 Flashcards
fibriae
allow it to stick onto other things waving fingers sitting on outside of cell protein polymers
flagella
allows it to swim
motor
allows flagellum to swim
nucleoid
where cell dna is located
prokaryotes is
tenth size of euk cell
how many bacteria for each body cell
10
why does bacteria have many diff shapes
shapes by synthesis of cell wall
what is centre of bacterial chromosome
dna binding protein and rna
how many chromosomes does bacteria have
1 chromosome 1 copy for each allele haploid no chromatin naked chromosome
what copy does bacteria pass top daughters
same copy
what does proteins in bacterium do
they segregate its chromosome
gram -ve
layer of peptide very thing
gram =ve
very tough very resistant to things like drying out and other insults since peptidoglycan protects them
exterior of prok cell is
rigid and multilayered
peptidoglycan
cell wall sets of sugar joined together by amino acids
cytopplasmic memb has
charged head groups
outer memb box sugar
sugars joined on phospholipid head stick out onto the surface
yellow box
poly sacharide coating
what does the outer strings do
make up capsule of bacterium
trans memb protein
same as euk memb
cell wall determines
shape
what are flagella and pilli used for
motality and attachment
does bacteria have rivbosomes
yes
what is capsule made of
largely made of sugar lots of sugar outside and then they also secrete its own sugar
how does capsule help
prevents it from losing water can protect viruses from killing them like bacteriophages can stop immune cells from recognizing bacterium our immune cell usually recognize protein sitting outside of cell if cell has capsule very hard to recognize they can make bio films which make it even more slimy
bacterial virulence
