A fastidious organism must be grown on what type of medium?

• A. Nutrient agar
• B. Enriched medium
• C. Minimal medium
• D. Selective medium

Answer: (B)

Verified step by step guidance

1. Understand the term 'fastidious organism': These are organisms that have complex nutritional requirements and will only grow when specific nutrients are included in their growth medium.
2. Identify the types of media: Nutrient agar, enriched medium, minimal medium, and selective medium. Each has different characteristics and purposes.
3. Nutrient agar: A general-purpose medium that supports the growth of a wide range of non-fastidious organisms. It may not provide the specific nutrients required by fastidious organisms.
4. Enriched medium: This type of medium contains additional nutrients, such as vitamins, minerals, and growth factors, which are necessary for the growth of fastidious organisms. It is specifically designed to support organisms with complex nutritional needs.
5. Minimal medium: Contains only the essential nutrients required for the growth of non-fastidious organisms. Fastidious organisms typically cannot grow on minimal media due to their specific nutritional requirements.