lecture 4

Question 1

flagella

Answer 1

prokaryotic and eukaryotic

Question 2

prokaryotic/bacterial flagella

Answer 2

no membrane bound organelles
corkscrew generates force
single flagellin protien
powered by H+ channel/proton driven
rigid flagellin attach to basal apparatus

Question 3

eukaryotic flagella

Answer 3

membrane bound organelles
9+2 microtubule arrangement
powered by ATP
whip-like movement
cilium

Question 4

gram stain

Answer 4

protects against osmotic lysis (plant walls with cellulose)

Question 5

gram positive

Answer 5

thick peptidoglycan layer

Question 6

gram negative

Answer 6

thin peptidoglycan layer surrounded by lipoploysaccharide (lps)

Question 7

what is competitive exclusion

Answer 7

good bacteria can provide inhibitory compounds that prevent pathogen growth

Question 8

benefits of good bacteria

Answer 8

protects from pathogens
required for development
vitamins and nutrients
aid in digestion
modulates immune system
produces seretonin