Author: Anonymous

How many times do you place your sterile loop into the stock culture of bacteria when performing a streak plate?

You need to transfer 110 microliters of water into a microfuge tube. You have three micropipettes at your disposal: a P20, a P200, and a P1000. Answer the following questions: A. Which pipet should you use? [a] B. In order to transfer the proper volume, what numbers should be displayed on the pipet? [b] C. When drawing up liquid, do you press down to the first or second stop? [c] D. When expelling liquid, do you press down to the first or second stop? [d]

Identify the following bacterial morphologies: A. [a] B. [b] C. [c]

For each characteristic listed below, indicate whether it is a property of Gram-positive bacteria, Gram-negative bacteria, or both. Has a thin layer of peptidoglycan [a] Has an outer membrane [b] Contains teichoic acid [c] Contains lipopolysaccharide [d] Has a periplasmic space [e] Has a cytoplasmic membrane [f] Has a thick layer of peptidoglycan [g] Contains lipoteichoic acid [h]    

Based on the growth patterns on the agar plates: Identify the temperature class of species B: [a] Give an example of an organism that belongs in the same temperature class as species B: [b].  (write out full genus and species)  

Identify the following bacterial morphologies: A. [a] B. [b] C. [c]

What is the function of the microscope part?  

An organism that does not lyse red blood cells is [a] hemolytic. An example of an organism that has this hemolysis pattern is [b].

What does “CFU” stand for?

What is the function of the microscope part?