Intro bacteria

Question 1

what should you cinsider when evaluating microbial disease and treatment

Answer 1

• what is the site of infection (could suggest potential pathogens)
• what are the clinical signs (may suggest possible causes)
• is this expected or not
• what are sensible choices for treatment
• what do i need to confirm prior to treatment

Question 2

list the relative sizes of microorganisms

Answer 2

white blood cells: 10-15 um
red blood cells: 7 um
yeast: 5um
bacteria: cocci = 1 um, rod = 5 um
viruses: 20-300 nm
prion: molecule, very small

Question 3

list the key structures of bacterium

Answer 3

Question 4

describe the structural differentiation of bacterial cell walls

Answer 4

see lecture notes for more detail

Question 5

what are endospores

Answer 5

• hard to penetrate by certain chemicals (including stains, disenfectants and chemical agents)
• resistant to higher temps (up to 100 degrees)
• resistant to most of common agents that would kill vegetative cells