Podcast
Questions and Answers
What is the purpose of adding blood and other special nutrients to the general media in enriched media?
What is the purpose of adding blood and other special nutrients to the general media in enriched media?
- To inhibit the growth of all microorganisms
- To encourage the growth of fastidious heterotrophs (correct)
- To promote the growth of anaerobic bacteria
- To create a suitable environment for fungi growth
What gives blood agar its opaque red color when solidified?
What gives blood agar its opaque red color when solidified?
- Growth of specific fungi
- Presence of hemoglobin from blood (correct)
- Toxins released by certain bacteria
- Addition of a red dye
Why is chocolate agar considered suitable for the growth of Neisseria?
Why is chocolate agar considered suitable for the growth of Neisseria?
- It contains a chocolate flavoring that Neisseria prefer
- It provides an environment with high oxygen content
- The medium is heated after preparation (correct)
- The heat treatment enhances Neisseria growth
Which type of bacteria can be identified by their hemolytic action on the red cells in blood agar?
Which type of bacteria can be identified by their hemolytic action on the red cells in blood agar?
What distinguishes selective media from general media in promoting microbial growth?
What distinguishes selective media from general media in promoting microbial growth?
What is the primary purpose of selective media?
What is the primary purpose of selective media?
Which medium is used for the cultivation of tuberculosis bacilli?
Which medium is used for the cultivation of tuberculosis bacilli?
What is the purpose of the bile salts in MacConkey agar?
What is the purpose of the bile salts in MacConkey agar?
Which medium is used to isolate gram-positive bacteria?
Which medium is used to isolate gram-positive bacteria?
What is the purpose of the neutral red indicator in MacConkey agar?
What is the purpose of the neutral red indicator in MacConkey agar?
What is the primary purpose of mannitol salt agar (MSA)?
What is the primary purpose of mannitol salt agar (MSA)?
