Cynthia Alonzo, M.S. Version 42-0249-00-01
Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.
Exercise 1: Viewing Prepared Slides
Questions
A. Identify the following parts of the microscope and describe the function of each.
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Experiment
Observing Bacteria and Blood
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Define the following microscopy terms:
● Focus: Is the image blurry or well-defined?
● Resolution:
● Contrast:
B. What is the purpose of immersion oil? Why does it work?
Exercise 2: Observing Bacteria Cultures in Yogurt Questions
A. Describe your observations of the fresh yogurt slide.
B. Were there observable differences between your fresh yogurt slide and the prepared yogurt slide? If so, explain.
C. Describe the four main bacterial shapes.
Cocci – Bacillus – Spirillum – Vibrio –
D. What are the common arrangements of bacteria? Diplo –
Strepto – Staphylo -
E. Were you able to identify specific bacterial morphologies on either yogurt slide? If so, which types?
Exercise 3: Preparing and Observing a Blood Slide Questions
A. Describe the cells you were able to see in the blood smear.
B. Are the cells you observed in your blood smear different than the bacterial cells you have observed? Why or why not?
Tionette
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