Catalase negative - Study guides, Class notes & Summaries
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MICROM 443 Question and answers rated A+ 2024/2025
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MICROM 443 Question and answers rated A+ 2024/2025Genus Staphylococcus 
- Cells tend to form clusters, may be single, in pairs, or short chains 
- common skin microbiota 
- Generally hardy and not nutritionally fastidious 
- Facultative anaerobes (w/ O2 --> respire; without O2 --> ferment 
- Catalase positive 
 
 
Genus Streptococcus 
- Cells tend to form chains 
- Common oral microbiota 
- Nutritionally fastidious 
- Aerotolerent anaerobes/ obligate fermentors, some are caphophiles 
- Cat...
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ASCP Microbiology Exam (Answered) With Complete verified Solution
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ASCP Microbiology Exam (Answered) With Complete verified Solution 
 
Gemella 
Gram positive diplococcus. 
Thrive best at high partial carbon dioxide pressure. 
Facultative anaerobe. 
Oxidase negative. 
Catalase negative. 
In mucous membranes of humans and animals and upper digestive tract. 
Leuconstoc 
Gram positive cocci often in chains. 
Intrinsically resistant to vancomycin. 
Catalase negative. 
Are generally slime forming. 
Responsible for cabbage fermentation. 
Acanthamoeba 
A genus of amoe...
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CSMLS Exam Review Question and answers already passed
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CSMLS Exam Review Question and answers already passed CSMLS Exam Review 
 
B 
A fingernail has been fixed in formalin, routinely processed, and embedded in paraffin. The tissue is found to be very hard to cut. Which of the following procedures on the block will preserve the tissue components, improve the section quality, and make it easier to cut sections? 
 
A) Treat with decalcifying agent 
B) Soaking in a solution that softens keratin 
C) Soaking in water 
D) Warming the block slightly 
 
 
C...
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Microbiology CSMLS Exam Review Questions with complete solution
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Microbiology CSMLS Exam Review Questions with complete solution 
The pulmonary form of anthrax is known as 
- Valley fever 
- Walking pneumonia 
- Farmers' lung 
- Woolsorters disease - CORRECT ANS-Woolsorters disease 
 
Streptococci are unable to synthesize the enzyme 
- Catalase 
- Kinase 
- Hyaluronidase 
- Lipase - CORRECT ANS-Catalase 
(Organisms that synthesize the enzyme catalase are able to protect themselves from the killing effects of H2O2 by converting it to H2O and O2. Streptococci ...
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USMLE STEP 1 MICROBIOLOGY Questions and Answers with Complete Solutions 2024
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USMLE STEP 1 MICROBIOLOGY 
Questions 
and Answers with Complete Solutions 2024 
Gram-positive organisms - ANS____ have a thick peptidoglycan layer and 
teichoic acid in their cell walls 
Gram-negative organisms - ANS____ have a thin peptidoglycan layer and a 
complex outer membrane containing lipopolysaccharide (LPS). 
Lipoteichoic acid - ANS____ is a teichoic acid attached to a lipid abundant on 
Gram-positive bacteria cell wall. 
Peptostreptococci - ANSClassification: 
-- Anaerobic gram-positi...
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CMMB 343 lab final exam questions and answers with complete solution
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CMMB 343 lab final exam questions and 
answers with complete solution 
How to do ..... 
BHI stant 
How to interpret results? - answerSlanted BHI agar in a test tube 
Inoculate with the sample 
Will see growth on surface of agar if aerobic microbe. 
Fissures and cracks below surface if able to ferment. 
Deep shake culture - answerInnoculate a loop of sample in molten agar and rotate in hands to 
mix. 
If fissures below the surface, can ferment. 
If no fissures, cannot ferment. 
Thioglycollate Med...
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ASCP Microbiology Exam (Answered) With Complete verified Solution
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ASCP Microbiology Exam (Answered) With Complete verified Solution 
 
Gemella 
Gram positive diplococcus. 
Thrive best at high partial carbon dioxide pressure. 
Facultative anaerobe. 
Oxidase negative. 
Catalase negative. 
In mucous membranes of humans and animals and upper digestive tract. 
Leuconstoc 
Gram positive cocci often in chains. 
Intrinsically resistant to vancomycin. 
Catalase negative. 
Are generally slime forming. 
Responsible for cabbage fermentation. 
Acanthamoeba 
A genus of amoe...
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ASCP RECALLS EXAM LATEST QUESTIONS AND ANSWERS INCLUDED GRADED 2024
- Exam (elaborations) • 9 pages • 2024
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ASCP RECALLS 
	 
		 
NON-INFLAMMATORY ORIGIN 	TRANSUDATES ARE USUALLY OF 
 
CONTAMINATION OF NUCLEIC ACID A COMMON ERROR IN POLYMERASE 
REACTION: 
 
POSITIVE DAT CAUSE OF FALSE NEGATIVE FORWARD ABO TYPING: 
POSITIVE DAT 
INCUBATION AT 37 C 
HYPERGAMMAGLOBULINEMIA 
ROULEAUX 
 
M. Tuburculosis PICTURE OF AN AFB SMEAR: GROWS WELL ON AN EGGS BASED 
MEDIUM AFTER 3 WEEKS 
 
POLYCYTHEMIA VERA DECREASE ERYTHROPOIETIN LEVEL IS FOUND IN: 
 
RECOLLECT A NEW SAMPLE IN A LESSER AMOUNT OF C...
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NBME CBSE ACTUAL TEST QUESTIONS AND ANSWERS 2024(COMPLETE) (Quiz bank with all the correct answers) (USMLE step 1)Medical examination
- Exam (elaborations) • 289 pages • 2024
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NBME CBSE ACTUAL TEST QUESTIONS AND ANSWERS 2024(COMPLETE) 
 
(Quiz bank with all the correct answers) 
 
(USMLE step 1)Medical examination 
 
NBME CBSE ACTUAL TEST 2024 
 
62 year old woman - osteoporosis – a bisphosphonate is prescribed. The expected beneficial effect of the drug is due to which of the following? 
Decreased Osteoclast Activity 
Cohot Study of elderly women – relative risk ratio for hip fractures among those who exercise regularly is 1.2 (95% confidence interval of 1.1 to ...
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CMMB 343 lab final exam questions and answers with complete solution
- Exam (elaborations) • 17 pages • 2024
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CMMB 343 lab final exam questions and 
answers with complete solution 
How to do ..... 
BHI stant 
How to interpret results? - Answer ️️ -Slanted BHI agar in a test tube 
Inoculate with the sample 
Will see growth on surface of agar if aerobic microbe. 
Fissures and cracks below surface if able to ferment. 
Deep shake culture - Answer ️️ -Innoculate a loop of sample in molten agar and rotate in hands 
to mix. 
If fissures below the surface, can ferment. 
If no fissures, cannot ferment. 
...
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