Culture Media Used in Microbiology

Which type of culture media stimulate the growth of bacteria and inhibit its competitors?

• Basal Media

• Enriched Media

• Selective Media

• Indicator Media

Which type of culture media encourage the growth of species from a mixed inoculum?

• Basal Media

• Enriched Media

• Selective Media

• Indicator Media

Which of the following is an organic component of Enriched media?

• amino acids

• glucose

• water

• blood

Which of the following culture media do not have organic components?

• Basal media

• Selective media

• Storage media

• Transport media

In preparing a culture medium for Bacillus, 28g of Nutrient Agar is required for 1000 ml distilled water. How many grams of Nutrient Agar to be used in 200 ml distilled water?

• 5.0 grams

• 5.6 grams

• 6.0 grams

• 7.8 grams

In preparing a culture medium for Fungi, 39g of Potato Dextrose Agar is required for 1000 ml distilled water. How many grams of Nutrient Agar to be used in 200 ml distilled water?

• 5.0 grams

• 5.6 grams

• 6.0 grams

• 7.8 grams

Suppose you are going to prepare Potato Dextrose Agar for your experiment at home, which do you think is the first step in doing the activity?

• Boil 200 g of sliced unpeeled potatoes in 1

  liter of water for 30 minutes.

• Filter through cheesecloth, saving effluent,

  which is potato infusion.

• Add dextrose, agar, and water to effluent.

  Boil to dissolve completely.

• Sterilize media by autoclaving at 121ºC for 15

  minutes.

The following are direct importance of culture media, which one is not?

• to obtain pure cultures

• to grow and count microbial cells

• to cultivate and select microorganisms

• to characterize microorganisms