5. Microbiology and Immunology
Laboratory Methods — Quiz
Test your understanding of laboratory methods with 5 practice questions.
Practice Questions
Question 1
Which type of culture medium is designed to support the growth of a wide range of microorganisms?
Question 2
When performing a Gram stain, what is the primary function of the decolorizer (alcohol or acetone)?
Question 3
Which part of a compound light microscope is used to bring the specimen into sharp focus after initial coarse adjustment?
Question 4
In microbiology, what is the primary purpose of 'streaking for isolation' on an agar plate?
Question 5
A microbiologist performs a serial dilution. They take $1 \text{ mL}$ of a bacterial sample and add it to $9 \text{ mL}$ of sterile diluent. This step is repeated four times. What is the final dilution factor after these four steps?