specific bacterial diversity

Question 1

gram positive bacteria

Answer 1

low and high GC

Question 2

low GC

Answer 2

clostridium, staphylococcus, streptococcus, bacillus, lactobacillus

Question 3

high GC

Answer 3

frankia, streptomyces, actinomyces

Question 4

lactobacillus

Answer 4

• rod shaped

- fermented products are an important commensal in human gut flora

Question 5

bacillus

Answer 5

• rod shaped
• endospore forming
• can survive extreme environments

Question 6

staphylococcus

Answer 6

• coccus
• medicallly important
• MRSA
• found in nose and harmless skin bacteria

Question 7

streptococcus

Answer 7

‘twisted chain’

• coccus
• divide on a single axis therefore the progenitor cells grow in pairs or chains

Question 8

frankia

Answer 8

filamentous

• carry out nitrogen fixation in soil
• atmospheric N- NH3

Question 9

actinmyces

Answer 9

facultative anaerobe

• looks like fingal hyphae
• soil ecology

Question 10

streptomyces

Answer 10

• from mycelia
• produces conidia spores not the same as endospores
• produce antibiotics

Question 11

streptomycin antibiotics

Answer 11

active against gram positive/ negative bacteria and fungi, in times of nutrient depletion- survival mechanism

Question 12

types of proteobacteria

Answer 12

alpha, gamma, beta, delta, epsilon

Question 13

alpha

Answer 13

rhizobiales

Question 14

example of rhizobial

Answer 14

bradyrhizobium/rhizobium- form symbiosis with plants and fix nitrogen to ammonia

Question 15

beta

Answer 15

neisseriales

Question 16

example of neisseriales

Answer 16

neisseria- meningitis and gonorrhea

Question 17

gamma

Answer 17

enterobacteria

Question 18

example of enterobacteria

Answer 18

shigella/ salmonella/ e.coli

Question 19

episilon

Answer 19

campylobacterales

Question 20

campylobacterales example

Answer 20

campylobacter and helicobacter

Question 21

camplobacter

Answer 21

high motile bacillus e.g. food born disease- C.jejuni

Question 22

helicobacter

Answer 22

has multiple flagella and causes stomach ulcers e.g. H.pylori