Justification should be given for each table to support your answers. Use approp

Question

Justification should be given for each table to support your answers. Use appropriate terms to describe the organisms: examples - thermophile, acidophile, obligate aerobe etc. (1) (2 points) Complete Table 1 below. Table 1. Nutritional requirements for microbial growth. Minimal glucose Minimal glucose + yeast extract (H6 Trypticase soy broth (TSB) Organism (MG) 2 day 7 dayday 7 day 2 day 7 day Negative control (sterile H20 Sample # 1 Sample #2 Sample #3 Sample #4 No growth, slight growth. +; moderate growth, ++; heavy growth, -1 (2) (2 points) Based on Table 1, identify the most probable bacteria for the bacterial samples #1-4 and justify for your conclusion. Possibilities are Escherichia coli, Bacillus subtilis, Lactobacillus plantarum and Staphylococcus epidermidis Sample # 1 : Sample #2: Sample #3: Sample #4: Justification:

Explanation / Answer

Please find the answers below:

Sample 1: Staphylococcus epidermidis (Generally found on the skin of humans, this bacterium requires the presence of digested sugars and cellular extracts for its survival, such as digested yeast extract or digested soy-proteins)

Sample 2: Lactobacillus plantarum (This microbe requires the presence of yeast extracts for its growth)

Sample 3: Bacillus subtilis (This bacteria requires no specialized medium for growth and can easily grow on minimum glucose media as well. Further supplementation of the medium enhances the growth of the bacteria)

Sample 4: Escherichia coli (This microbe requires supplementation with yeast extract generally for growth and can be easily grown within 24 hours)

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