Which item is a shallow, circular, transparent dish with a flat lid, used for the culture of microorganisms?

Which item is a shallow, circular, transparent dish with a flat lid, used for the culture of microorganisms?

• A. Petri Dish
• B. Inoculating Loop
• C. Microcentrifuge
• D. Peg Rack

Answer: (A)

A dish like this is used to culture microorganisms because its shallow, circular shape and clear, flat lid create a stable, observable surface for growing colonies on an agar medium. The transparent material lets you watch growth as it happens, and the lid protects the culture from contaminants while helping retain moisture. Plates are typically incubated inverted to prevent condensation from dripping onto the surface. The other items mentioned are different lab tools with distinct roles: an inoculating loop transfers microbes, a microcentrifuge spins tubes to separate components, and a peg rack holds multiple cultures in a rack. This combination of features and purpose points to the item used for microbial culture.

A dish like this is used to culture microorganisms because its shallow, circular shape and clear, flat lid create a stable, observable surface for growing colonies on an agar medium. The transparent material lets you watch growth as it happens, and the lid protects the culture from contaminants while helping retain moisture. Plates are typically incubated inverted to prevent condensation from dripping onto the surface. The other items mentioned are different lab tools with distinct roles: an inoculating loop transfers microbes, a microcentrifuge spins tubes to separate components, and a peg rack holds multiple cultures in a rack. This combination of features and purpose points to the item used for microbial culture.