Microbiology Media Composition Quiz

A medium where the exact amount of each pure chemical is known.

This type of media inhibits the growth of some bacteria while selecting for the growth of others.

General purpose media supports a wide range of microbes, while selective media inhibits some and favors others.

Provides the minimal, basic growth requirements, but not all microbes can grow on it.

Contains a mixture of proteins and extracts; exact composition is unknown.

The high salt concentration selects for salt-tolerant bacteria.

It is a pH indicator that shows if mannitol fermentation has occurred, turning yellow in acidic conditions.

Bile salts and crystal violet inhibit Gram-positive bacteria, allowing Gram-negative bacteria to grow.

It is a pH indicator that turns red in acidic conditions, indicating lactose fermentation.

Lactose is fermented by some bacteria, leading to acid production and a color change.