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MCB 3020 GENERAL MICROBIOLOGY EXAM | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE SOLUTIONS 100% CORRECT

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MCB 3020 GENERAL MICROBIOLOGY EXAM | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE SOLUTIONS 100% CORRECT

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MCB 3020 GENERAL MICROBIOLOGY
EXAM 3 NEWEST WITH QUESTIONS AND
ANSWERS 2026/2027 100% CORRECT

How can you damage the cell wall? - ANSWER>Lysozyme hydrolyzes bonds in peptidoglycan




Penicillin inhibits peptide bridges in peptidoglycan




mycoplamsas: no cell wall


- causes walking pneumonia


-can't give them penicillin cause of lacking cell wall




Protoplasts - ANSWER>wall-less gram positive cells




spheroplats - ANSWER>wall-less gram negative celss




L-forms - ANSWER>wall-less cells that swell into irregular shapes

, Acid Fast Cell Walls: - ANSWER>- like gram positive cell walls


- waxy lipid (mycolic aid)


-mycobacterium


Nocardia: resist the decolorization with acid alcohol




Mycoplasmas - ANSWER>lack of cell walls


sterols in plamsa membrane




smallest living cell




causes walking pneumonia




can't use penicillin




Archaea - ANSWER>wall less or wall of pseudomurein




(lack NAM and D-amino acids)

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