Microbiology worksheet with answers

What is a zoonosis?

1. AAn infection that spreads from animals to humans
2. BAn infection spread through water
3. CAn infection caught in hospital
4. DAn infection that only affects zoo animals

Which microorganism most often causes oral or vaginal thrush?

1. AStaphylococcus aureus
2. BHerpes simplex virus
3. CTrichomonas vaginalis
4. DCandida albicans

Which bacterium is the most common cause of urinary tract infections?

1. AMycobacterium tuberculosis
2. BStreptococcus pyogenes
3. CEscherichia coli
4. DStaphylococcus aureus

Pneumocystis jirovecii pneumonia in a person with advanced HIV is an example of:

1. AA zoonotic infection
2. BAn opportunistic infection
3. CA vector-borne infection
4. DA food-borne infection

Which infection is a typical complication of broad-spectrum antibiotic use, causing severe diarrhoea?

1. AClostridioides difficile infection
2. BHepatitis A
3. CSalmonella infection
4. DHelicobacter pylori infection

Which bacterium is the most common cause of stomach ulcers?

1. AEscherichia coli
2. BClostridioides difficile
3. CHelicobacter pylori
4. DStaphylococcus aureus

Gram-positive cocci are found. Which test quickly separates staphylococci from streptococci?

1. AThe catalase test
2. BThe acid-fast stain
3. CThe coagulase test
4. DGrowth on MacConkey agar

A child develops bloody diarrhoea after eating an undercooked burger, then a week later has kidney failure, anaemia and a low platelet count. Which organism is most likely?

1. AStaphylococcus aureus
2. BClostridium perfringens
3. CShiga toxin-producing E. coli such as O157:H7
4. DRotavirus