(Solved): help please B10 175 General Microbiology Assessment General Microbiology Differential Classification ...

B10 175 General Microbiology Assessment General Microbiology Differential Classification of Gram Positive and Gram Negative Bacteria Name: Date: Section: The two main types of bacteria that we discussed this semester are gram positive and gram negative bacteria. These types of bacteria have many physical differences that are key in treating an infection with either type. Remember gram positive bacteria have a much thicker peptidoglycan cell wall while gram negative cells have a thinner wall underneath a layer of phospholipids (outer membrane). 1. Examine the two cell envelopes above and determine which is gram positive and which is gram negative. How do you know? 2. Which type of cell envelope confers more resistance to osmotic pressure? Why? 3. Which type of cell envelope confers more resistance to antimicrobial drugs? Why? A person has a bacterial intection and you need to determine if the infection is caused by one of these two bactenial types. Staff have collected a sample from the patient and cultured the sample in mutrient broth. A person has a bacterial infection and you need to determine if the infection is caused by one of these two bacterial types. Staff have collected a sample from the patient and cultured the sample in nutrient broth. 4. How would you isolate the bacteria species in this mixed sample? List the steps you would take and the necessary materials to complete this task.