Essay Lab Module 1

805 WordsSep 15, 20134 Pages
MBK – Lab Report Name: ____ Section: ___ Module 1, Experiment 1: Observing Bacteria and Blood (No microscope needed for this lab) Questions: A. List the following parts of the microscope, AND Briefly describe the function of each part. A. Eyepiece – transmits and magnifies the image from the objective lens to the eye. B. Main tube – moves vertically for focusing C. Nosepiece– holds the objective lenses and rotates them. D. Objective lens - Objective lenses provide different focal lengths. E. Stage - holds the object to be viewed F. Diaphragm – controls the amount of light reaching the slide G. Light source – a mirror, lamp, or bulb for illuminating slide work. H. Course adjustment – used for the…show more content…
E. What are four primary bacterial shapes? Cocci, bacillus, spirillum, vibros F. Bacteria occur in several common arrangements with each other. What are they? They occur as single bacterium, which uses the names cocci, bacillus, spirillum, vibros. They occur as pairs, which add the prefix diplo, such as diplococci. They appear as linked chains, with the prefix strepto, as in streptobacillus, and they occur in clusters with the prefix staphlo, as an example, staphylococci. G. Can you identify specific bacterial morphologies on either the fresh or prepared yogurt slide? If so, which types? Yes, there observable shapes in the slide that would seem to indicate the presence of bacillus and cocci. The cocci appear to grow in clusters, which would indicate that they are staphylococci, and there also indicates that streptococci chains are presented. As Lactobacillus bulgaris and thermophillic Streptococcus are the most common types of bacteria in yogurt, one could imagine that they are the specific bacteria present in the slide. H. Observe the images of a blood smear. Describe the cells you were able to see in the blood smear. (You can use the images we provided, or images in your textbook or lab manual, or you can search online for blood smear images by entering Microscopic images of blood into your search engine.) Red blood cells, Monocytes, Lymphocytes, Neutrophils, Eosinophils, and

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