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cle Secure! https://www.coursesites.com/weba www.coursesites.com/webapps/assessment/take/launch,jsp?course assessment Jda,9e Digital Learning and... in Lightings - TV Produ.BPS EDFS-Eval M Inbox Apps D 7-FULL Reading Th.-. l :Apps 7-FULL Remaining Time: 50 minutes, 39 seconds Question Completion Status: QUESTION 30 A common medium used for growing fastidious bacteria is O blood agar O trypticase soy agar. O mannitol salt agar. O MacConkey medium O a reducing medium. QUESTION 31 Basic dyes are O attracted to the acidic substances of bacterial cells. O anionic. O used in negative staining. O repelled by cells O dyes such as India ink and nigrosin QUESTION 32 which of the following will result when 1% to 5% agar is added to nutrient broth, boiled and cooled? a pure culture O a mixed culture O a solid medium O a liquid medium a contaminated medium QUESTION 33

Explanation / Answer

1) Blood agar - Fastidious bacteria requires growth factors and complex nutrients for their normal growth. Blood agar consists of a base containing a protein source, soybean protein digest, sodium chloride (Nacl), agar and 5% sheep blood is an enriched medium. Trypticase soy agar general-purpose, nonselective media and is suitable for the growth of a wide variety of fastidious and non-fastidious microorganisms. Mannitol Salt Agar. Mannitol Salt Agar is a selective and differential medium for the members of the genus Staphylococcus. MacConkey agar is a selective and differential medium that selectively isolates Gram-negative and enteric bacilli and differentiates them based on lactose fermentation. A reducing medium contains substance that removes oxygen.

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