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microbiology Secure httpldigital ed Ch 10 Homework 46% 04/04/18 e203377 Part 1 (

ID: 252677 • Letter: M

Question

microbiology

Secure httpldigital ed Ch 10 Homework 46% 04/04/18 e203377 Part 1 (0.3 point) The organism that caused Michael's infertion an outer membr Part 2 (0.3 point) 0 See Hint What would likely happen if the mucus that Michael coushed up was streaked on a plate, colonies were isolated, and the bacteria were used for a Gram stain? Choose one: A. The causative agent would definitely stain purple, B. The causative agent would definitely stain pinkish purple C The causative agent would definitely not accept stain, D. The causative agent would definitely stain pink. c, Part 3 (0.3 point) If the mucous that Michacl coughed up was streaked on a plate, colonies were isolated, and the bacter ia were used for an acid-fast stain. the Mycobactenium tuberculosis cells would most likely appear dark/deep 10/14 &USER;

Explanation / Answer

2) Option 'c' is the correct answer.

The causative agent would definitely not accept stain. M. tuberculosis has an unusual, waxy coating on the cell surface(primarily mycolic acid), which makes the cells impervious to Gram staining;

3) Red, Mycobacterium tuberculosis is completely acid-fast, which means the entire cell holds onto the dye. Acid-fast bacteria retain Carbol Fuchsin so they appear red.