Question

Match each GPB with its description or characteristics. 21. Gardnerella vaginalis _2. Bacillus anthracis - 3. Listeria monocytogenes _4. Lactobacillus acidophilus _5. Erysipelothrix rhusiopathiae U 6. Nocardia asteroides _7. Corynebacterium diphtheriae 1. Large spore forming GPB 2. Pleomorphic, club-shaped non-branching GPB 3. Tiny motile GPB that can grow at 25°C and 35°C 4. Partially acid fast, branching GPB 5. GPC with simple branching that produces acid 6. Pleomorphic Gram positive to Gram variable bacillus 7. Thin GPB appearing in chains that is H2S positive Case Study The spinal fluid of a newborn is received in the laboratory. The mother had received limited prenatal care, works at a pet store and has been suffering from gastroenteritis for the past ten days. The Gram stain shows a moderate amount of a tiny Gram positive diphtheroid along with neutrophils. The specimen is plated onto sheep blood agar, chocolate agar and MacConkey agar. 1. You would expect it to grow on a. all three of these agar plates b. the blood agar and MacConkey agar plates c. the blood agar and chocolate agar plates d. none of these agar plates 2. It is further determined that the bacterium is not acid fast, a nonspore former, and that a narrow zone of beta hemolysis was noted on the sheep blood agar plate. Which of the following is most correct? a. The organism may be Bacillus anthracis b. Nocardia can be eliminated as a possible choice. C. This may be an aerotolerant Actinomyces The organism may likely be Listeria or Lactobacillus

Answer 1

Match each gram positive bacteria with characteristics or description;

Gram positive bacteria;

Gram positive Bacteria that give positive result is The gram stain test. an allen Ik retain the color of the caystal violet stair is The gram stair. cell wall composed of Thick layer of particular substance (called as peptidoglycan)

1.Gardnerella vaginallis - pleomorphic gram positive to gram variable bacillus.

Reason;

Gardnerella vaginallis pleomorphic gram positive to Gram variable bacillus, 2 also known as waynebacterium vaginalis » Bacteria present is the male urethra and vagina plemorphic, gram negative gode. Non- sporing, won motile, and non capsulated >> Nona spore

2.Bacillus anthracis - large spore forming gram positive bacteria.

reason;

© Bacillus anthracip large spore forming Gram positive Bacteria Baullus is a genus & spore forming, aerobic, roda shaped bacteria, mon Bacterium responsible for the deadly disease anthran most notorious for Bacillus anthraid The Bacillus species include Bacillus cereus, Bacillus clausii

3.Listeria monocytogenes - tiny motile gram positive bacteria,grow at 25 °c and 35°c.

reason;

3 listeria monocytogenes - Tiny motile gram positive Bacteria, grow at me and 3500 - slow tumbling type of motility by mears of penitrichous flagella at 22-250 grow better is Blood agar and Tryptose phosphate agar a catalase positive, positive christie, steind. and munch. Peterson reaction

4.Lactobacilus acidophilus - gram positive cocci with simple branching that produce acid.

Reason;

7 lactobacillus acidophilus - Gram positive Locci with simple branching that produce aud » found is the Intestine, fermenting isto lactic acid - strairs are commercially used for many dairy products, 7 optimum growth remperature of around 37°C

5.Erysipelathrix rhusiopathiae - thin gram positive bacteria appearing in chain that is H2S positive.

Reason;

Erysipelathain rhusiopathiae - This gram positive Bacteria appearing is chair is Has positive > non motile, non sporing, non capsulated a on tellwrite agar, ik produk black colonies » Produu utaneous lesion associalid with arthritis, lymphopharyngitis on lymphadenitis

6.Nocardia asteroids - partially acid fast,branching gram positive bacteria.

Reason;

Ra 6 Nocardia asteroides - partially acid fast Branching Jaam positive Bacteria, ► Nocardia is a gram positive, catalase Positive rod shaped bacteria forms partially acid yast beaded branching filamentos, causes Nocardia Irfections by Enhalation of the Bacteria on Through Th Taumatic Introduction

7.Corynebacterium diphtheria - pleomorphic club shaped and non branching gram positive bacteria.

reason;

→ Corynebacterium dip therine - pleomorphic club shaped non branching gram positive Bacteria → It causes Pseudomembranous pharyngitis, myocarditis, and carrythmias, & Tonoid vaccine Prevent dip theria - geam positive, club shaped nad 9 >