Lab 11 SIM tubes and Starch agar

This type of media inhibits the growth of some types of organisms

• structural media

• differential media

• enrichment media

• selective media

This type of media contains specific ingredients that help us to visually distinguish which species do or do not carry out a specific biochemical process.

• selective media

• differential media

• chemically defined media

• enrichment culture media

If you want to select for a specific type of bacteria, what type of media would you use?

• Nutrient broth

• Differential media

• Selective media

• an autoclave

This plays a major role in making a medium differential; it detects acid or base production

• Bile salts

• peptones

• pH indicator

• sugars

When we determine if tryptophan is broken down by bacteria, we detect this product in the SIM tubes

• Indole

• pyruvic acid

• Hydrogen

• urease

When a SIM tube is analyzed for breakdown of tryptophan, what indicates a positive result?

• red color

• yellow color

• black color

• cloudiness through the agar

When a SIM tube is analyzed for breakdown of sulfur containing amino acids, what indicates a positive result?

• red color

• yellow color

• black color

• cloudiness through the agar

When analyzing SIM tubes, what reagent is used to detect if tryptophanase is produced by bacteria?

• iodine

• Kovac's reagent

• hydrogen peroxide

• no reagent is added for detection

When analyzing SIM tubes, what reagent is used to detect if bacteria are motile?

• iodine

• Kovac's reagent

• hydrogen peroxide

• no reagent is added for detection

When analyzing SIM tubes, what reagent is used to detect if bacteria produce desulfurase?

• iodine

• Kovac's reagent

• hydrogen peroxide

• no reagent is added for detection