Question

Bacterium | NA plate | Catalase reaction | Catalase reaction --- | --- | --- | --- | | Bubbles | (+) or (-) Alcaligenes faecalis | aerobic | strong | + Escherichia coli | aerobic | strong | + Lactococcus lactis | aerobic | absent | - Escherichia coli | anaerobic | minimal | + Lactococcus lactis | anaerobic | absent | - Clostridium sporogenes | anaerobic | absent | - 1. 1.Compare the growth on both plates to your predicted results from the Experiment Setup worksheettable. Do you see any discrepancies? Comment in 1-2 sentences. 2. 2.Observed catalase reaction for E. coli growing on both plates were very different. Perform online research and try to explain why this is the case. Suppose that these catalase results were expected andtrustable. 3. Pseudomonas aeruginosa is aGram-negative, catalase-positive opportunistic pathogen, often incorrectly classified as an obligate aerobe. It can cause life-threatening infections in immunocompromised people, such as patients with cystic fibrosis. In their lungs, it forms robust biofilms. Deep biofilm layers contain no oxygen, and P. aeruginosa cannot ferment.How does it obtain ATP energy for growth? Do your online research and explain in a few sentences.

          Bacterium | NA plate | Catalase reaction | Catalase reaction
--- | --- | --- | ---
 | | Bubbles | (+) or (-)
Alcaligenes faecalis | aerobic | strong | +
Escherichia coli | aerobic | strong | +
Lactococcus lactis | aerobic | absent | -
Escherichia coli | anaerobic | minimal | +
Lactococcus lactis | anaerobic | absent | -
Clostridium sporogenes | anaerobic | absent | -

1. 1.Compare the growth on both plates to your predicted results from the Experiment Setup worksheettable. Do you see any discrepancies? Comment in 1-2 sentences.
2. 2.Observed catalase reaction for E. coli growing on both plates were very different. Perform online research and try to explain why this is the case. Suppose that these catalase results were expected andtrustable.
3. Pseudomonas aeruginosa is aGram-negative, catalase-positive opportunistic pathogen, often incorrectly classified as an obligate aerobe. It can cause life-threatening infections in immunocompromised people, such as patients with cystic fibrosis. In their lungs, it forms robust biofilms. Deep biofilm layers contain no oxygen, and P. aeruginosa cannot ferment.How does it obtain ATP energy for growth? Do your online research and explain in a few sentences.

Bacterium | NA plate | Catalase reaction | Catalase reaction
— | — | — | —
| | Bubbles | (+) or (-)
Alcaligenes faecalis | aerobic | strong | +
Escherichia coli | aerobic | strong | +
Lactococcus lactis | aerobic | absent | -
Escherichia coli | anaerobic | minimal | +
Lactococcus lactis | anaerobic | absent | -
Clostridium sporogenes | anaerobic | absent | -

1. 1.Compare the growth on both plates to your predicted results from the Experiment Setup worksheettable. Do you see any discrepancies? Comment in 1-2 sentences.
2. 2.Observed catalase reaction for E. coli growing on both plates were very different. Perform online research and try to explain why this is the case. Suppose that these catalase results were expected andtrustable.
3. Pseudomonas aeruginosa is aGram-negative, catalase-positive opportunistic pathogen, often incorrectly classified as an obligate aerobe. It can cause life-threatening infections in immunocompromised people, such as patients with cystic fibrosis. In their lungs, it forms robust biofilms. Deep biofilm layers contain no oxygen, and P. aeruginosa cannot ferment.How does it obtain ATP energy for growth? Do your online research and explain in a few sentences.

Added by Joshua J.

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