Microbiology Unknown Lab Report Essay

2396 Words10 Pages
Lab12-Medical Microbiology- Part1– Differential Media/Biochemical Tests, Sp2012 (Set all of your margins to ½”)
Purpose: The purpose of this lab is to help you become a little familiar with some of the tests that can be typically performed in a clinical or research lab facility. These tests may help in determining a particular pathogen’s growth needs.
There are several sections to this lab. Find each section and complete the “Preparing for Class” sections.
Preparing for class - Day 1
Read in your lab manual about the following agar mediums: Blood Agar (pg 168), EMB Agar (pg 170), Mannitol Salt Agar (MSA)(pg 172) ), MacConkey Agar (pg 174), and PEA Agar (pg 176) to answer the following:

1. What does the blood agar select for?
…show more content…
|bacteria, or |enterococci |
| | | |greenish/gray hue | |
| | | |around | |
|EMB Agar | |Distinguishes bacteria that ferment |Dark blue colonies with|E. coli and P. |
| |Gram-negative bacteria |lactose and or sucrose and those that|green metallic sheen or|aeruginosa |
| | |do not. |pink. | |
|MSA Agar |For organisms that are |Isolates for mannitol fermentation |Yellow color change in |Staphylococcus aureus |
| |halotolerant. | |surrounding media. |and Staphylococcus |
| | | | |epidermidis |
| | | |
Open Document