Skip to content
Back to quiz
6. virulence is:
- individual cases occurring geographically isolated
- the ability the microbe has at causing the disease in the first place
- the degree of pathology caused by the organism eg a measure of how larger infectious does is needed and how series the disease cased is
- number of people in a population with a disease at a particular time
7. bacterial slime layers:
- are unorganised and loosely attached
- are firmly attached and highly organised
- aid is cell movement
- are rigid to prevent cell rupturing
8. toxic shock syndrome, imptigo and osteolmyelitis are all caused by which micro-organism?
- treponenna pallidum
- streptococcus pyogenes
- staphylococcus aureus
- yersina pestis
9. which of the following STI's causes ulceration
- chancroid and gonorrhoea
- chlamydia and gonorrhoea
- syphilis and chancroid
- syphillis and chlamydia
10. viruses are:
- facultative anaerobes
- obligate intracellular parasites
- facultative intracellular parasites
- obligate aerobes
11. exotoxin reactions are caused by:
- toxins secreted by the bacterium, often diffusible polypeptides
- products that help the microbe avoid the immune system
- LPS's on the outside of gram negative bacteria adhering to membranes
- toxins released in the gut causing massive secretions of fluid into the gut lumen
12. which of these is not a virulence factor?
- high pathogenicity
- low infectivity
- adhesions to aid in cell attachment
- flagella to aid motility
13. which type of antibiotic targets cell membrane?
- rifamyscin
- penicillin
- polymyxin
- streptomycin
14. malaria causes which symptoms?
- neck stiffness, abnormal breathing and fever/chills
- inflammation and bleeding at tissue damage
- swollen and haemorrhagic lymph nodes and septicaemia
- vomiting and diarrhoea
15. which of these is not a method used by cells to maintain pH
- increase in saturated fatty acids in the membrane
- increased H+ impermeability
- presence of cytoplasmic buffering molecules
- high number of cation transport channels
16. rickettsia species:
- have arthropod vectors
- replicate at the site of bite wound causes necrosis
- cause haemorrhaging (rash)
- all of the answers
- are found in dog, human and rodent reservoirs
17. lipids can be produced by limiting the phosphate supply to which microorganism?
- xanthamonas
- aspergillus
- alicaligenes
- arthrobacter
18. stimulating inflammation by degranulation causing the release of histamine is a feature of which immune cell?
- mast cell
- t killer cell
- natural killer cell
- monocyte
19. which pathogen is transmitted by inhaling bacteria in fine water droplets from shower heads and air con systems?
- influenza
- legionella pneumophilia
- mycobacterium tuberculosis
- rhabdovirus
20. asexual spores from ascomycota are:
- zygospores
- conidia spores
- ascospores
- sporangiuospores