2/20: Microorganisms and Culture Media

What are culture media used for in the laboratory?

• To provide essential nutrients and minerals to support the growth of microorganisms

• To sterilize laboratory equipment

• To measure the pH level of substances

• To observe the behavior of animals in a controlled environment

Which of the following are true about Microorganisms?

• They have various characteristics

• They have varying habitats

• They have varying nutritional needs

• They all require the same nutrients.

Tags

NGSS.HS-LS2-2

Culturing microorganisms is essential for which of the following?

• Diagnosing infectious diseases

• Obtaining antigens

• developing serological assay for vaccines.

• Genetic studies

• Identification of microbial species

Which of the following statements is true about microorganisms and culture media?

• All microorganisms can grow on any type of culture media

• Microorganisms do not have specific nutritional requirements

• Some microorganisms cannot grow on a culture media at all

• Culture media can be used to repair damaged microorganisms

Why is culturing microorganisms important?

• For diagnosing infectious diseases and obtaining antigens

• For increasing the strength of microorganisms

• For creating new species of microorganisms

• For entertainment purposes

What additional purposes does culturing microorganisms serve beyond diagnosing diseases?

• For genetic studies and identification of microbial species

• For cooking and food preparation

• For cleaning laboratory equipment

• For computer programming and software development

What is NOT one of the uses of culture media mentioned in the text?

• Isolating pure cultures

• Storing culture stock

• Testing the effect of antimicrobial agents

• Enhancing the flavor of food products

What is the concentration of agar typically used in solid media?

• 0.2-0.5%

• 1-5%

• 15-20%

• 1.5-2.0%

What is the concentration of agar typically used in semi-solid media?

• 0.2-0.5%

• 1-5%

• 15-20%

• 1.5-2.0%

What is the concentration of agar typically used in liquid media?

• 0.2-0.5%

• 1-5%

• 15-20%

• 0%