Microbe Examples + Other stuff

Question 1

Name 3 Gram +ve cocci found on skin
Name 2 Gram +ve bacilli found on skin

Which of these attaches to objects that penetrate skin

Name 1 fungus found

Answer 1

• Staphylococcus aureus
• Staph epidermidis (attaches to catheters etc.)
• Strep pyogenes
• Propionibacterium acnes
• Clostridium perfingens

Candida albicans

Question 2

Name 3 Gram +ve cocci found in the eye
Name 1 Gram +ve bacillus found
Name 1 Gram -ve cocci found

Answer 2

• Staph aureus
• Staph epidermidis
• Streptococcus pneumoniae
• Propionibacterium acnes
• Neisseria species

Question 3

In mouth and nose,

Name 1 Gram -ve cocci
Name 4 Gram +ve cocci
Name 1 gram -ve bacillus
Name 1 Gram +ve bacillus

Answer 3

• Neisseria species
• Staph aureus
• Staph epidermidis
• Strep mutans
• Strep pneumoniae
• Haemophilus species
• Propionibacterium acnes

Question 4

In intestinal tract,

Name 1 Gram +ve cocci
Name 2 Gram -ve bacilli

Answer 4

• Enterococcus species
• Enterobacter species
• Escerichia coli

Question 5

In vagina,

Name 1 Gram +ve cocci
Name 1 Gram +ve Bacillus
Name 1 Gram -ve Bacillus

Answer 5

• Staphylococcus species
• Lactobacillus species
• Proteus species

Question 6

1. How many lobes are in each lung
2. Describe the microflora pop. of Lower Respiratory Tract
3. What is Pneumonia
4. Name 5 symptoms

Answer 6

1. Right-3, Left-2
2. Virtually sterile
3. Infection of the Alveoli and Lung Tissue
4. Fever, Malaise, Tachycardia, Tachypnea, possibly Shock

Question 7

How does Staph aureus appear on a gram stain
How does Staph Epidermidis appear on a gram stain
How does Strep Pneumoniae appear on a gram stain

Answer 7

Aureus: Blue clusters of cocci
Epidermidis: Blue Diplococci
Pneumoniae: Blue Rugby shaped cells

Question 8

State one virulence factor for Staph aureus

Describe two exotoxins

Answer 8

• Has a capsule that allows increased resistance to phagocytosis
• Cytolytic exotoxins attack cell membranes
• Superantigen exotoxins cause toxic shock by massive release of interleukins and cytokines