Microbiology Instruments and DNA Amplification Quiz

What is the primary function of an autoclave in microbiology?

• To incubate microbial cultures

• To sterilize media and instruments

• To observe microorganisms

• To measure pH levels

Which instrument is used to maintain optimal temperature for microbial growth?

• Microscope

• Spectrophotometer

• Incubator

• Centrifuge

What does a spectrophotometer measure in microbial cultures?

• Cell density

• pH levels

• Temperature

• Colony count

Which instrument is essential for observing the morphology of microorganisms?

• Centrifuge

• Bunsen Burner

• Microscope

• Magnetic Stirrer

What is the purpose of a pH meter in microbiology?

• To count colonies

• To measure acidity or alkalinity

• To sterilize instruments

• To amplify DNA

What is the first step in the PCR process?

• Cooling

• Denaturation

• Extension

• Annealing

At what temperature does the annealing step of PCR typically occur?

• 95°C

• 37°C

• 50-65°C

• 72°C

Which component is NOT required for PCR?

• Centrifuge

• Primers

• DNA polymerase

• DNA sample

What does PCR stand for?

• Polymerase Cell Reaction

• Polymerase Chain Reaction

• Polymerase Chain Replication

• Polymerase Copying Reaction

Which of the following is a benefit of using PCR?

• Time-consuming

• Requires large samples

• Sensitive and automated

• Limited applications