bacteria growth and identification

Question 1

what are pili?

Answer 1

hair like appendages on the surface of many bacteria

Question 2

what are flagella?

Answer 2

lash like appendages on certain bacteria and eukaryotes

Question 3

what is the function of salt in selective agar?

Answer 3

disinfectant, inhibit bacterial growth

Question 4

what is lipopolysacharide?

Answer 4

endotoxins found on outer membrane of gram negative bacteria

Question 5

which type of toxins do both gam positive ad negative secrete?

Answer 5

exotoxins

Question 6

which type of taxis do only gram negative secret?

Answer 6

endotoxins

Question 7

what colour is gram negative?

Answer 7

pink

Question 8

what colour is gram positive?

Answer 8

purple

Question 9

give an example of a gram positive cocci?

Answer 9

staphylococcus aureus

Question 10

give an example of a gram positive bacilli ?

Answer 10

clostridium tetani

Question 11

give an example of a gram negative cocci?

Answer 11

neisseria meningitidis

Question 12

give an example of a gram negative bacilli?

Answer 12

prevotella intermedia

Question 13

all living cells are either?

Answer 13

prokaryotic or eukaryotic

Question 14

identify some characteristics of prokaryotes?

Answer 14

strands of DNA, no nucleus, small ribosomes

Question 15

identify some characteristics of eukaryotes?

Answer 15

nucleus, large ribosome, organelles, internal membrane

Question 16

give examples of prokaryotes?

Answer 16

bacteria, archea

Question 17

give examples of eukaryotes?

Answer 17

plants, animals

Question 18

what are the 2 types of agar?

Answer 18

selective and non-selective

Question 19

give an example of selective agar?

Answer 19

manitol agar (high salt conc)

Question 20

give an example of non-selective agar?

Answer 20

blood agar

Question 21

what is the name for bacteria which grow in the presence of oxygen?

Answer 21

aerobes

Question 22

what are anaerobes?

Answer 22

bacteria which grow in the absence of oxygen

Question 23

what is the name for bacteria which ca grow with or without oxygen?

Answer 23

facultative anaerobes

Question 24

what is the name for bacteria which grow in reduced concentrations of oxygen?

Answer 24

microaerophilic

Question 25

what is the name for bacteria which require low conc of CO2?

Answer 25

caonophilic

Question 26

endogenous bacteria are most likely found where?

Answer 26

nares

Question 27

what does MRSA stand for?

Answer 27

methicillin resistant staph aureus

Question 28

what does SICP stand for?

Answer 28

standard infection control precautions

Question 29

what is osteomyelitis?

Answer 29

bone infection

Question 30

which antibiotic is used to treat staph aureus?

Answer 30

amoxicillin

Question 31

what is the name for infection of the heart valves and in which type of people is it common in?

Answer 31

infective endocarditis - intravenous drug users

Question 32

what is the name for white cell toxin?

Answer 32

leukocidin