Catalase negative - Study guides, Class notes & Summaries

What is fermentation - Being able to grow anaerobically in the presence of a suitable organic compound, such as a sugar. Several reduced products are excreted by the cell as a way of disposing of the electrons derived from oxidation. Function and Types of hydrolytic enzymes - Hydrolytic enzymes hydrolyze (break down) complex molecules to get food that can be transported into the cell. 1. Amylase 2. Caseinase 3. Gelatinase Amylase - catalyzes starch hydrolysis. Reacts readily with iodine...

Purpose of Blood Agar - correct answer See if bacteria has hemolysis abilities Purpose of Catalase Test - correct answer Determine if bacteria produces catalase Purpose of Indole Test - correct answer See if bacteria produces tryptophanase Medium for Indole test - correct answer Tryptone broth Purpose of Klinglers Iron Agar - correct answer See ability of bacteria to ferment glucose and/or lactose and the ability to produce CO2 and H2S gases Purpose of Lysine Decarboxylase Broth -...

Differential media - allow certain bacteria to be differentiated from others by change of color, zone of clearing, or other Bacteria can prevent phage attachment and escape infection by acquiring mutations on genes which alter their _________. - cell surface receptors A _______ agent does not kill a microorganism, but rather just inhibits its growth. - bacteriostatic A clear area surrounded by growth of host cells is called a _______. - plaque A color change to yellow on the mannitol salt ...

In a quality control procedure on a new batch of Mueller-Hinton agar plates using a stock culture of S. aureus, all the disk zone sizes are too small. The most likely reason for this is that: A. potency of the antibiotic disks is too high B. Mueller-Hinton plates were poured too thin C. disks should have been set up on mannitol salt D. bacterial suspension was not diluted to the proper concentration - Answer D. bacterial suspension was not diluted to the proper concentration Which o...

GPC Exam Questions And Answers Streptococcus - Correct Answer-Beta Hemolytic, smaller zone compared to S. aureus S. pyogenes (group A) - Correct Answer-Impetigo, penicillin resistant, slightly elongated spheres Colony >.5mm (opposite Anginosus group) GPC chains catalase negative PYR pos / VP negative (opposite of Anginosus group) Bacitracin SUSCEPTIBLE agglutinate lancefield A serum S. agalactiae (group B) - Correct Answer-Beta Hemolytic (very hard subtle) Confirmatory test is CAMP ...

Who am I? #MicroMonday 1. I am an obligate aerobic Gram-negative rod that does not ferment glucose and is catalase positive. 2. First described by Walter Burkholder in 1949 as the cause of bacterial rot of onion bulbs. 3. I was originally included in the Pseudomonas genus. 4. I can be found in soil, water, infected plants, animals, and humans 5. I am capable of breaking down toxic compounds found in pesticides and herbicides. 6. I have shown resistance to some disinfectants 7. I commonly...

Name the steps necessary to perform a Gram Stain correct answers 1. Allow sample to dry 2. Heatfix sample using incinerator for 30-60 second 3. Flood with crystal violet and let it sit for one minute- rinse well with water 4. Flood with iodine and let sit for one minute - rinse well with water 5. Flood with decolorizer until the liquid flowing off the slide become clear - rinse well with water 6. Flood with safranin and let sit for one minute - rinse well with water Gram Stain interpreta...

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...

Sputum reveals lancet-shaped, gram positive cocci arranged in pairs. What is this most likely? A. Strep. pyogenes B. Staph epidermidis C. Strep. pneumoniae D. Klebsiella pneumoniae - correct answer S. Pneumoniae -Lancet shaped diplococci structure -Catalase negative -Alpha hemolytic -Meningitis, sinusitis, otitis media and pneumonia What diseases are associated with Strep. pyogenes? - correct answer (RAN TIPS) Rheumatic Fever Acute glomerulonephritis Necrotizing fasciit...

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 ...