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ASU MIC 205 PENTON EXAM 1 LATEST 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED) LATEST EDITION 2024$17.99
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ASU MIC 205 PENTON EXAM 1 LATEST 2024 WITH ACTUAL QUESTIONS AND CORRECT VERIFIED ANSWERS/ALREADY GRADED A+ 100% GUARANTEED TO PASS CONCEPTS(ALL WHAT YOU NEED) LATEST EDITION 2024
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Course
ASU MIC 205 PENTON
Institution
ASU MIC 205 PENTON
ASU MIC 205 PENTON EXAM 1 LATEST 2024
WITH ACTUAL QUESTIONS AND CORRECT
VERIFIED ANSWERS/ALREADY GRADED A+
100% GUARANTEED TO PASS CONCEPTS(ALL
WHAT YOU NEED) LATEST EDITION 2024
ASU MIC 205 PENTON EXAM 1 LATEST 2024
WITH ACTUAL QUESTIONS AND CORRECT
VERIFIED ANSWERS/ALREADY GRADED A+
100% GUARANTEED TO PASS CONCEPTS(ALL
WHAT YOU NEED) LATEST EDITION 2024
What is the difference between a simple and differential stain? - ✔✔ANSWER✔✔-
>>-Simple: bacteria differ chemically from inner surroundings and thus can be
stained to contrast with their environment
-Differential: detects peptidoglycan, can distinguish between two bacteria
What does a Gram stain detect? - ✔✔ANSWER✔✔->>differences in the
composition of the cell wall (i.e. peptidoglycan)
How does a gram stain differentiate bacterial cells?
,by dying them a different color
What color is a Gram-positive organism? - ✔✔ANSWER✔✔->>purple
What color is a Gram-negative organism? - ✔✔ANSWER✔✔->>pink/red
What are the principle differences between a gram negative and gram positive
bacterial cell? - ✔✔ANSWER✔✔->>gram + has a thicker layer of peptidoglycan
and no outer membrane
- Gram + cells have Techoic Acids
-Antigenic determinants
-Species identification
-Some (e.g. Mycobacterium) have Mycolic Acid (tuberculum): waxy lipid, survive
dessication, difficult to stain (acid-fast stain)
gram - has a thinner layer of peptidoglycan and an outer membrane, Gram - have
an outer bilayer membrane
Outer portion is composed of lipopolysaccharide (LPS) lipid+sugar
Outer membrane allows for survival in harsh environments
The outer sugar portion is called the O antigen, an antigenic determinant.
Lipid portion of LPS is called Lipid A, an Endotoxin (e.g. E. coli)
Dead cells release lipid A, trigger fever, inflammation, shock, blood clotting
, What do penicillin antibiotics act on with the bacterial cell?- ✔✔ANSWER✔✔-
>>peptidoglycan layer
Are gram + or gram - bacteria more susceptible to penicillin antibiotics? Why don't
they harm eukaryotes? - ✔✔ANSWER✔✔->>Gram - are usually harder to treat
due to the outer membrane
(many antibiotics target peptidoglycan layer-penicillin) making gram + more
susceptible to penicillin than gram -
What does an acid-fast stain detect? - ✔✔ANSWER✔✔->>differentiates cells with
a waxy cell wall that contain high amounts of mycolic acid (ex; mycobacterium and
nocardia)
What color are acid-fast organisms after staining with an acid-fast stain? -
✔✔ANSWER✔✔->>red
How does an acid-fast stain differentiate bacterial cells? - ✔✔ANSWER✔✔-
>makes them appear red
Name an acid-fast organism.
Mycobacterium
Nocardia
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