1.    Look up the pH of lemon juice and vinegar. Based on your results and your knowledge of favorable environmental conditions for fungal growth, what can you conclude about the effect of pH on growth?

2.    What is the source of the mold that grew on the samples (bread & apple)?

3.    Is Saccharomyces cerevisiae Gram-positive or Gram-negative? Research and describe the composition of yeast cell walls. How does the composition compare to the cell walls of Gram-positive or Gram-negative bacteria?

IS SACCHAROMYCES CEREVISIAE GRAM-POSITIVE OR GRAM-NEGATIVE?
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