Which of these organisms are normal flora of the throat and are associated with dental caries,...
Which of these organisms are normal flora of the throat and are associated with dental caries, brain abscesses, and the case study presented here?
- Streptococcus pyogenes
- Streptococcus viridans
- Streptococcus pneumoniae
- Peptostreptococcus species
- Staphylococcus aureus
Homework Answers
Answer: Streptococcus viridans
( The streptococcus viridans is the gram positive bacteria which is alpha hemolytic. It is the normal flora of the throat as well as associated with dental caries.)
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Which of these
organisms are normal flora of the throat and are associated with
dental caries,...
Case Study #1 Clinical history: An HIV positive male presented in clinic with confusion and disorientation. He had a fev...
Case Study
#1
Clinical
history: An HIV positive male presented in clinic with
confusion and disorientation. He had a fever 38.5°C and
photophobia. His CD4 T cell count was 80/ul. An MRI and lumbar
puncture were performed. The MRI showed various small lesions
within the brain. CSF analysis indicated 32 White Blood Cells/ul
with 89% lymphocytes, and 6% monocytes, glucose of 22mg/dl, and
protein of 89mg/dl. Gram stain showed yeast and India ink negative
stain showed a thick capsule.
Image...
A throat culture grows normal oropharyngeal microbiota. The coagulase test for the organism is positive. What...
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4) Which of the bacteria grew well in 6.5% NaCl? Which bacteria did not grow well...
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Nester etal MICROBIOLOGY: A Human Perspective Case Study-Chapter 21 Respiratory System Infectious 5-year-old Hispanic man presented to his family physician with fever which had persisted over 4 days. He had no history of fevers lasting this long. He had contracted tuberculosis when he was 17, but he had no family history of TB. He had taken no medications. He was a smoker and occasionally drank alcohol. He described to his doctor that 2 days prior, he suddenly developed chills and...
Case Study
#1
Clinical
history: An HIV positive male presented in clinic with
confusion and disorientation. He had a fever 38.5°C and
photophobia. His CD4 T cell count was 80/ul. An MRI and lumbar
puncture were performed. The MRI showed various small lesions
within the brain. CSF analysis indicated 32 White Blood Cells/ul
with 89% lymphocytes, and 6% monocytes, glucose of 22mg/dl, and
protein of 89mg/dl. Gram stain showed yeast and India ink negative
stain showed a thick capsule.
Image...
Match the following: Corynebacterium diphtheriae's virulence requires this A Neurotoxin Major virulence factor of strep. pneumoniae The major virulence factor of group A strep, in recent fatal cases V Clostridium tetani's main virulent factor is this B Erythrogenic tosin C Hyaluronidase D. Lysogenic conversion E. Capsule Spreading factor in staph. aureus cellulitis infections Match the following: ✓ Gram positive cocci which causes pharyngitis Patient must be treated with antitoxcin plus an antibiotic for this disease Gram negative rod which causes...
Laboratory & Exercises 1. You will not be physically performing these activities. However, you will be responsible for knowing how to perform and interpret them. View the following video clips: • SE Broth & Bile Esculin • CAMP Test 2. Review how to interpret the following tests by completing the chart: Positive Result Negative Result Gram Stain for cocci and bacilli purple Schaeffer-Fulton Stain for Endospores Negative Stain for Capsules Catalase (Reagent: Hydrogen peroxide) Coagulase (Reagent: Rabbit Plasma) Oxidase (Reagent:...
8. An isolate of Streptococcus found to be sensitive to O positive for bile solubility test is likely ptochin after incubation on blood agar plate and A. B. Streptococcus pyogenes C. Viridans Streptococcus D. Streptococcus pneumoniae E. Group D enteric Streptococcus treptococcus 9. Which of these test reactions will produce alkaline end products? A. Nitrate reduction and Oxidase tests B. Amylase activity and Lipase activity tests C. Methyl red and Voges Proskauer tests D. Citrate Utilization and Urease tests E....
Nester etal MICROBIOLOGY: A Human Perspective Case Study-Chapter 21 Respiratory System Infectious 5-year-old Hispanic man presented to his family physician with fever which had persisted over 4 days. He had no history of fevers lasting this long. He had contracted tuberculosis when he was 17, but he had no family history of TB. He had taken no medications. He was a smoker and occasionally drank alcohol. He described to his doctor that 2 days prior, he suddenly developed chills and...
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