Microscopic Organisms and Laboratory Techniques Quiz

Prokaryotic organisms lack a nucleus and other membrane-bound organelles.

Autoclaves use high-pressure steam to kill microorganisms and sterilize materials.

Streak plates isolate bacterial colonies for further study and identification.

Escherichia coli is a well-known example of a Gram-negative bacterium.

Objective lens increases the size of the specimen for better observation.

Endospore staining specifically targets bacterial spores for visualization.

Oil immersion enhances resolution by reducing light refraction.

Ziehl-Neelsen staining specifically stains acid-fast bacteria for differentiation.

Archaea thrive in extreme environments like high temperatures, acidity, or salinity.

Petri dishes provide a surface for bacterial growth and observation.

Streak plate method involves spreading bacterial sample to obtain isolated colonies for counting.

Fluorescence microscope excites fluorescently-labeled molecules for live cell observation.

Laminar flow hoods maintain a sterile airflow to protect samples from contamination.

API test system identifies bacteria based on their biochemical reactions.