Biology

You are currently working as a pathologist (study of infectious disease) and you are given a bacterial sample that needs to be identified. All you know about the bacteria is people experience fever, chills, and skin pustules. You need to conduct test in order to help in identification of the bacteria, the morphology and how to treat the bacteria. Using information we have gone over in class and in lab please answer the following:
1. What types of test would you help in detecting what type of bacteria this is? (Please discuss 3 ways to do this, you may use specific media but that will only be counted as 1 example)

2. How would you test this bacterium with live organisms? What would you want to observe? If you see different signs as compared to human patients such as loss of hair or organ damage how would you explain this?

3. What types of test would you conduct to help treat against this bacterial disease? (Please discuss 3 different ways)

4. What types of products such as toxins could this bacterium produce to give such signs and symptoms. What other signs or symptoms could this bacteria cause?

5. How would you treat human patients and how could the treatment be effective? (Please discuss 2 treatments)

Your work will be graded upon how detailed and creative your answers are. Expand on your thoughts.

SCI 207 Week 1 Laboratory : Population Biology

 

Visit Population Biology and complete the virtual lab. This lab gives you the opportunity to explore the affects of competition on population growth. Follow the instructions on the Population Biology Submission Form. Using this worksheet, you will answer the lab questions and fill in the table on the Population Biology Submission Form. Save it as a Word document and submit it.

Carefully review the Grading Rubric for the criteria that will be used to evaluate your assignment.

Laboratory: Population Biology

Complete the Population Biology Lab found at:http://www.mhhe.com/biosci/genbio/virtual_labs/BL_04/BL_04.html. This lab gives you the opportunity to explore the affects of competition on population growth.

CAREFULLY, follow the instructions to conduct your virtual experiments.  Fill in the table below as you go.  The questions below are the same ones found in the “journal” of the lab.  Hint: Make sure you read click on the “Information” box; valuable information for answering the questions can be found there! You are required to answer all six questions and submit this document to the Dropbox.

Do NOT email the journal questions to your instructor through the website above.

Paramecium Growth Data P. aurelia grown alone, cells, mL P. caudatum grown alone , cells, mL P. aurelia grown in mixed culture, cells/mL P. caudatum grown in mixed culture, cells/mL
Day 0        
Day 2        
Day 4        
Day 6        
Day 8        
Day 10        
Day 12        
Day 14        
Day 16        

 

Journal Questions

1.      Make a hypothesis about how you think the two species of Paramecium will grow alone and how they will grow when they are grown together.  (Make sure you understand what a hypothesis is before you address this!)

 

 

2.      Explain how you tested your hypothesis.  (Give details of how you conducted your experiment. Consider this the “Methods” section of a lab report.)

 

 

3.      On what day did the Paramecium caudatum population reach the carrying capacity of the environment when it was grown alone? How do you know?

 

 

4.      On what day did the Paramecium aurelia population reach the carrying capacity of the environment? How do you know?

 

5.      Explain the differences in the population growth patterns of the two Paramecium species. What does this tell you about how Paramecium aurelia uses available resources?

 

 

6.      Describe what happened when the Paramecium populations were mixed in the same test tube. Do the results support the principle of competitive exclusion?

 

 

7.      Explain how this experiment demonstrates that no two species can occupy the same niche.

 

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