Where do bacteria grow in lab culture?

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Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

Where do bacteria grow in lab culture?

Explanation:
Bacteria in lab culture grow as colonies on nutrient agar. The nutrient agar provides both the nutrients bacteria need to multiply and a solid surface that lets individual cells or groups of cells grow into visible clusters called colonies. This setup also helps scientists isolate, observe, and count bacteria. Pure water lacks nutrients, so no replication occurs there. Metal surfaces don’t provide the necessary nutrients or environment for colony formation, and air contains neither nutrients nor a surface for growth, so bacteria won’t grow there.

Bacteria in lab culture grow as colonies on nutrient agar. The nutrient agar provides both the nutrients bacteria need to multiply and a solid surface that lets individual cells or groups of cells grow into visible clusters called colonies. This setup also helps scientists isolate, observe, and count bacteria. Pure water lacks nutrients, so no replication occurs there. Metal surfaces don’t provide the necessary nutrients or environment for colony formation, and air contains neither nutrients nor a surface for growth, so bacteria won’t grow there.

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