Explain what happened at the time marked x

Reference no: EM131885519

Assignment

Answer critical Thinking question #2 for chapter 6 on page 180. Answers should be submitted in word document with any associated references used

1 E.Coli was incubated with aeration in a nutrient medium containing two carbon sources, and the following growth curve was made from this culture

A) Explain what happened at the time marked x

B) Which substrate provided "better" growth condition for the bacteria? How can you tell?

2 Assume that after washing your hands you leave ten bacterial cells on a new bar of soap. You then decided to do a plate count of a soap after it was left in soap dish for 24 hours. You dilute one gram of the soap 1:106 and plate it on heterotrophic plate count agar. After 24 hours of incubation, there are 168 colonies. How many bacterial were on the soap? How did they get there?

3) Heat lamps are commonly used to maintain food at about 50 degree C for as long as 12 hours in cafeteria serving lines . The following experiment was conducted to determine whether this practice poses a potential health hazard.

Beef cubes were surface-inoculated with 500,000 bacterial cells and incubated at 43-53degree C to establish temperature limits for bacterial growth. The following results were obtained from heterotrophic plate counts performed on beef cubes at 6 and 12 hours after incubation.

Reference no: EM131885519

Questions Cloud

Create a complete marketing plan by the end of the course : You will create a complete Marketing Plan by the end of the course. You will write the Fourth section of the Marketing Plan for this assignment.

Perform a complete cardiac assessment : Describe how the nurse would perform a complete cardiac assessment (heart, carotid, jugular, and peripheral pulses) using the following techniques:

How does poverty affect marginalized women and children : How does poverty affect marginalized women and children what is written below?

What methods of appeal is the author using : Are there fallacies in her logic? What methods of appeal is the author using?

Explain what happened at the time marked x : Explain what happened at the time marked x. Which substrate provided "better" growth condition for the bacteria? How can you tell?

Explore to promote and teach the skills of first aid : What are some avenues you could explore to promote and teach the skills of First Aid and CPR in your community and family?

List the sections of the marketing plan : Using the Waters Bottling Company in Module 1, continue to build the Marketing Plan Sections for the product you have selected/ created.

Principles that should guide technical communications : Identify two ethical principles that should guide technical communications. Explain each of the principles you chose and provide an example

How would each religion think about the value of the life : In George's analysis of his own life, how would each religion think about the value of his life as a person, and value of his life with ALS?

User Account

All Pages