Title
Two Slide Under Microscope Comparison
Purpose
The purpose of this lab is to observe and discern the properties of two items that we viewed under a microscope. Amongst the criteria we are looking for, we want to find out if the items are living, what makes them living.
Questions
Predictions
From the observations, I predict that one of the items was part of a living organism while the other was not alive or part of a living structure. I believe this because the second slide cells and sprinkled around the specimen.
Background Info.
So far this year, we have discussed the difference between living and non-living things. We have also discussed the many ways that one can identify the difference between living and non-living things. Our class has done an activity where we must try and label different species as living or non-living and give reasons why we feel this way. The variable that we can change during the experiment is the specimen we see, the variable that we cannot change will be what we see under the microscope. These set of changeable variables are called the dependent and
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However, the same cannot be said for the red material in Slide #1. From my observations, I have concluded that the blue specimen was once part of a living thing. In class, we have thoroughly discussed the differences between specimens that are living and those that are not. Using this knowledge, the main reason I claim that the Sample #2 was living, is because cells were within the specimen. We learned in class that cells can intake oxygen, can reproduce and need food to survive. These are all criteria that can be sued to tell is something is alive or non-living. My findings have supported my original prediction of Sample #2 being living. Some of the errors that I could have made to gain this knowledge, is that I assumed the cell looking things in Sample #2 are
Haemolytic colonies were classified by a white ring around the patched colony, indicating that haemolysis of the blood agar occurred. Conversely, non-haemolytic colonies were classified by a lack of a white ring, which indicated that no haemolysis took place.
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I knew it was epithelia as the cells on the slide were connected to form sheets that were attached to a basement membrane, two characteristics of epithelia tissue. (Urry, L.A. et al., 2017) Epithelia cells are polar meaning that they always have one side of the cell facing a lumen (cavity) which is another way I identified these cells as epithelial. (Urry, L.A. et al., 2017) I identified it was simple epithelia as there was only one layer of cells and they were all connected to the basement membrane. (Urry, L.A. et al., 2017 ) It was identified as cuboidal as the cells looked like squares. They were also identified as this as they had their nucleus placed centrally in the cells. (Mitchell, B.S. & Peel, S 2009) The tissue is also ciliated and this can be seen in the lumen as there are areas that are blurred in the slide which suggest cilia as the cells are smaller that of epithelia. (Mitchell, B.S. & Peel, S 2009)
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