jrtyj Essay

1664 WordsSep 25, 20147 Pages
Osmosis Case study You are a veterinarian working in Indooroopilly and return from lunch to find a nurse treating a six year old kelpie, Baxter. Baxter is very lethargic, has an increased heart rate, and when you pinch his skin the fold remains visible. The owner tells you that they knew something was wrong when, upon returning to the outdoor car park from a three hour shopping trip, they saw Baxter passed out on the back seat. The temperature in the car would have been very high and Baxter will have lost a lot of water through evaporation as he panted to stay cool. This loss of water would have reduced his blood volume, thereby increasing the concentration of the ECF. Hypothesis This is the hypotheses that you developed…show more content…
Each coloured line represents one group’s data. Discussion Remember to treat these questions like a short answer question in the final exam: be specific, clear, and concise. 1. Briefly describe (in complete sentences) whether the results of your experiment confirm or disconfirm your original hypothesis? It was hypothesised that when sheep’s RBC are added to a hypertonic solution, they will shrivel and occupy less space within a haematocrit tube, when compared to a hypotonic solution that will cause the cells to lyse. While the RBC that were added the hypotonic solution did lyse, the data showed no real pattern that suggests clear evidence that the cells had shrivelled in the hypertonic solution. Therefore the hypothesis was disproven. 2. What happens to the parameter you have measured when sheep red blood cells are placed in both hypotonic and hypertonic environments? The red blood cells, when placed in a hypotonic solution did lyse and there were no blood cells present. We expected that in a slightly less hypotonic solution a great number would lyse but there would still be some live blood cells present. However all blood cells lysed in a less hypotonic solution as well. In the more isotonic solutions the blood cells did shrivel however it

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