Microbiology worksheet with answers

How do bacteria usually reproduce?

1. AMitosis with a nuclear membrane
2. BBinary fission
3. CMeiosis
4. DBudding from a spore

What is the main function of bacterial flagella?

1. AAttachment to host cells
2. BStorage of nutrients
3. CMovement
4. DProtection against drying out

In infection control, what is a vector?

1. AA drug used to prevent infection
2. BAn object such as a door handle that carries germs between patients on a ward
3. CThe first person infected in an outbreak
4. DA living organism that carries a pathogen from one host to another

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

1. AChlamydia trachomatis
2. BNeisseria gonorrhoeae
3. CTrichomonas vaginalis
4. DTreponema pallidum

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

1. AClostridioides difficile infection
2. BSalmonella infection
3. CHelicobacter pylori infection
4. DHepatitis A

In the chain of infection, what is the "reservoir"?

1. AThe route by which the pathogen leaves the infected host's body
2. BThe way the pathogen enters a new host
3. CThe person who is most at risk of infection
4. DThe place where the pathogen normally lives and multiplies

On MacConkey agar, pink colonies grow from a urine sample. What does this tell you?

1. AThe organism does not ferment lactose, so it is probably Salmonella
2. BThe organism is a Gram-positive coccus
3. CThe organism is probably a Gram-negative rod that ferments lactose
4. DThe organism is a fungus

Which hepatitis viruses are mainly spread through contaminated food and water?

1. AHepatitis C and E
2. BHepatitis B and D
3. CHepatitis B and C
4. DHepatitis A and E