Microbiology worksheet with answers

What is a pathogen?

1. AA drug that kills bacteria
2. BAny microorganism living on the skin
3. CA microorganism that can cause disease
4. DA cell of the immune system

Who discovered penicillin in 1928?

1. ARobert Koch
2. BLouis Pasteur
3. CJoseph Lister
4. DAlexander Fleming

The HPV vaccine mainly protects against:

1. ACervical and other cancers caused by human papillomavirus
2. BHIV infection
3. CHepatitis B and liver cancer
4. DHerpes simplex infection

Which type of immunity is given by breast milk antibodies?

1. ANatural active immunity
2. BArtificial passive immunity
3. CNatural passive immunity
4. DArtificial active immunity

What does an ELISA test detect?

1. AThe DNA sequence of the whole bacterial genome
2. BSpecific antigens or antibodies, using an enzyme that causes a colour change
3. CThe shape of bacteria under the microscope
4. DBacterial growth on solid agar plates

Which laboratory test separates Staphylococcus aureus from most other staphylococci?

1. AThe coagulase test
2. BThe catalase test
3. CThe acid-fast stain
4. DThe Gram stain

In the 1840s Ignaz Semmelweis lowered deaths from puerperal fever in a Vienna maternity clinic. What did he introduce?

1. AHandwashing with chlorinated lime before examining women
2. BKeeping mothers in separate isolation rooms after delivery
3. CVaccination of all mothers before birth
4. DTreating mothers with penicillin

Why are beta-lactamase inhibitors such as clavulanic acid combined with amoxicillin?

1. AThey slow the excretion of amoxicillin by the kidneys, raising its level
2. BThey make amoxicillin active against viruses
3. CThey kill bacteria by themselves through the cell membrane
4. DThey protect amoxicillin from bacterial enzymes that destroy it