Mac, Carb, TSI, and Urea

What is the pH indicator found in MaConkey agar?

• Cresol red

• Neutral red

• Phenol red

• Bromothymol blue

What are the chemical inhibitors found in MacConkey agar?

• Urea and Safranin

• Neutral red and Phenol red

• Bile salts and Crystal violet

• Ferric ions and Yeast

What is the carbohydrate (sugar) found in MacConkey agar?

• Glucose

• Lactose

• Sucrose

• Mannitol

What organisms does MacConkey agar inhibit?

• Lactose fermenters

• Proteus species

• Gram (-) bacteria

• Gram (+) bacteria

A medium that allows some organisms to grow, and inhibits the growth of others is called:

• Enteric

• Differential

• Selective

• Differential and Selective

The anaerobic process in which a sugar is broken down into an alcohol and/or a gas:

• Aerobic respiration

• Fermentation

• Anaerobic respiration

• Glycolysis

Tags

NGSS.HS-LS2-3

What kind of medium distinguishes one type of organism from another?

• Selective

• Differential

• Selective and Differential

• Simple

What is the scale that measures the degree of acidity or alkalinity called?

• Sliding scale

• Acidity scale

• Hydrogen scale

• pH scale

The products that are formed when proteins are partially broken down:

• Sugars

• Enzymes

• Peptones

• End-products

What kind of end products are formed by carbohydrate fermentation?

• Acid end products

• Alkaline end products

• Gas end products

• Gas and water end products