1. S. aureus is positive for nitrate reductase
S. pyogenes is negative for nitrate reductase.
2. S. aureus is positive to ferment mannitol.
S. epidermidis is negative to negative to ferment mannitol.
1) are the following bacteria neg or positive for nitrate reductase ? S. aureus S. pyogenes...
Draw the following bacteria, include correct shape and arrangement: Staphylococcus aureus: Streptococcus lactis: Streptococcus pyogenes: Staphylococcus epidermidis: Mycobacterium: Pseudomonas aeruginosa: Escherichia coli: Bacillus subtilis: Salmonella typhi: Proteus vulgaris:
OXIDASE REAGENT POS NEG What does the positive test result indicate? Select one: a. bacteria that produce catalase b. bacteria that produce cytochrome C oxidase c. bacteria that ferment lactose d. All of the answers are correct
microbe A 1. Which of these microbes would best represent Staphylococcus aureus? One of these bacteria is E. coli, a Gram negative rod. Which microbe on this plate would best represent the results for E. coli? 3. Which of these microbes can ferment mannitol? microbe microbe C
Compare and contrast the following microbes: Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes, Streptococcus agalactiae, Streptococcus pneumoniae, Streptococcus viridans, Enterococcus faecalis, Neisseria meningitidis, Neisseria gonorrhoeae, Treponema pallidum, and Borrelia burgdorferi. Include identification techniques, diseases produced and treatment.
EXPERIMENT 1: Which bacteria was gram-positive after Gram staining? Select one: O a. S. aureus O b. S. pneumoniae o cnone of the answer choices o d. E. coli EXPERIMENT 1: Which bacteria was pink and rod-shaped after Gram staining? Select one: O a. S. pneumoniae o b. E. coli O c. M. phlei O d. S. aureus EXPERIMENT 2: Which bacteria did not stain green after acid-fast staining? Select one: O a. E. coli O b. M. phlei O...
Test interpretation:
A. Addition of reagents A and B: color changed to redà nitrate
reductase- positive (nitrate reducer). If this is the case, you are
done, do not add zinc powder.
B. Addition of reagents A and B: no color changeà it could be:
(a) nitrate reductase-negative (non-reducer) or (b) nitrate
reductase-positive (super reducer). ADD ZINC POWDER TO THE BROTH to
distinguish between these two possibilities.
1. If red color formsà nitrate is still present in the broth:
non- reducer....
Test Purpose Reagents Observation Results Gram To determines the identify the bacteria as a gram positive or a gram negative. Crystal violet, iodine, Alcohol ,safranin Pink rods Gram negative rods Oxidase To determine the presence of cytochrome oxidase enzyme . Oxidase paper Lactose To determine if the bacteria can ferment carbohydrate . None Indole Test To determine the bacteria’s ability to decompose amino acid tryptophane to indole. Kovac added to1ml of trypotone broth Optimum Temp To determine the bacteria’s ability...
Microbiology Matching: a. Mannitol b. Coagulase c. Catalase d. Novobiocin e. Camp f. Bacitracin g. Optochin 1. ___ Genus Streptococcus identified by negative reaction 2. ___ S. aureus is identified by its positive reaction 3. ___ S. saprophyticus is identified by its resistance 4. ___ S. epidermidis is identified by its negative reaction 5. ___ S. pyogenes is identified by sensitivity 6. ___ S. pneumoniae is identified by its sensitivity. 7. ___ S. agalactias is identified by its positive reaction
1. The most resistant of all non-spore-forming pathogens: a. S. pyogenes b. S. aureus c. S. pneumoniae d. N. gonorrhoeae e. N. meningitides 2. Pyogenic means: a. Fever-causing b. An extreme form of diarrhea c. Severe dehydration d. Pus-filled e. both a and d 3. Fill in the blank: This pathogen causes gas-gangrene: 4. The genus Clostridium is the causative agent of: a. Botulism b. Tetanus c. Colitis d. Gangrene e. all of the above 5. Bacillus is: a, Gram...
A throat culture grows normal oropharyngeal microbiota. The coagulase test for the organism is positive. What is the genus and species of the organism? 1. Staphylococcus aureus 2. Streptococcus agalactiae 3. Streptococcus pyogenes 4. Staphylococcus epidermidis