Diversity And Ubiquity Of Microbes Pre: Lab Answers

Diversity and Ubiquity of Microbes Pre-Laboratory Questions 1. What environmental settings would you expect to provide rich sources of microbes, in terms of overall numbers and different microbial types? Since the most of the microbes are ubiquitous, they are readily found in public bathrooms, phones, countertops, door handles, kitchen sinks, and human body parts such as the face and hands (Sherwood, 2017). In addition, public places exemplified by hospitals, grocery stores, and schools present an environment, which promotes the growth of microbes. 2. Would you expect all types of microbes in your samples to grow well on nutrient agar at room temperature? Why or why not? The answer is no since microbes thrive well in different conditions.
The colony has shades of white. Very small dots Small colonies are observed. The colony has edges appearing wavy. It appears cream white. Activity Day 4, the plates (4) after 96 hours after incubation For best results, avoid the use of flash. Do not remove the lid of the Petri dish. Tilt the plates at slight angle. Activity Day 5, the plates (4) after 120 hours after incubation For best results, avoid the use of flash. Do not remove the lid of the Petri dish. Tilt the plates at slight angle. Post-lab Questions 1. Was any growth observed on the control plate? What would growth on the control plate indicate about the aseptic technique used? How might it affect interpretation of results obtained with the three different environmental samples? Describe another situation in which it would be desirable to use aseptic technique. On the control plate, no observable growth of the microbes was experienced. Otherwise, if there could have been any noticeable growth on this plate, then the aseptic techniques applied were not effective enough to prevent accidental introduction of microbes through contamination. In addition, the control experiment ought
In this case, the results of this plate in this experiment will be skewed as compared to one of the other plates. Performing dialysis procedures is one of the situations in which aseptic techniques are applied (Cherney & Nall, 2017). The nephrologists have to carry out these procedures in controlled environments to prevent the introduction of pathogens through contamination. 2. Were individual colonies distinguishable on any of the plates? If so, which? Describe the appearance of the colonies. It is apparent that individual colonies were observed on the environmental plate samples other than the control plate. The colonies were creamy yellow and some were white by the end of the fifth day. In addition, they assumed a fairly circular shape. 3. Which environmental sample provided the most abundant growth? Which provided the greatest number of different types of microbial growth? Did these results match those predicted? The garbage sample, as well as the stream sample, provided suitable conditions for bacterial growth. In fact, in these two samples, bacterial growth covered the entire Petri dishes. However, a large number of bacterial colonies manifesting the most significant variances in their morphologies