Microbiology worksheet with answers

What is the most effective single measure to prevent the spread of infection in hospitals?

1. AWearing a face mask at all times
2. BGiving every patient antibiotics
3. CKeeping windows closed
4. DHand hygiene

Tapeworms and roundworms are examples of:

1. AProtozoa
2. BFungi
3. CPrions
4. DHelminths

What is sterilisation?

1. AReducing the number of microorganisms to a level safe for patients
2. BKilling or removing all microorganisms including spores
3. CCleaning visible dirt from surfaces
4. DKilling only bacteria but not viruses

How do people usually become infected with Legionella pneumophila?

1. ABy inhaling aerosols from contaminated water systems
2. BBy being bitten by an infected tick
3. CBy person-to-person spread through kissing
4. DBy eating undercooked chicken or unpasteurised milk products

Which organism is a Gram-negative diplococcus that causes a sexually transmitted infection?

1. AChlamydia trachomatis
2. BTrichomonas vaginalis
3. CNeisseria gonorrhoeae
4. DTreponema pallidum

Why does high vaccination coverage also protect babies too young to be vaccinated?

1. ABabies are naturally immune to all vaccine-preventable diseases
2. BVaccines kill the pathogen in the environment
3. CFewer people can pass on the infection, so it spreads less
4. DVaccinated people pass antibodies to everyone they meet

A deep, dirty wound becomes swollen and very painful, and gas can be felt under the skin. Which organism is most likely?

1. AStreptococcus pneumoniae
2. BClostridium perfringens
3. CNeisseria gonorrhoeae
4. DBordetella pertussis

Several people vomit within a few hours of eating fried rice that was cooked the day before and kept at room temperature. Which organism is the classic cause?

1. AClostridium botulinum
2. BSalmonella Typhi
3. CBacillus cereus
4. DListeria monocytogenes