Prokaryotes :: science

ProkaryotesAbstract/Summary Changing our focus from the properties and functions that take place inside the booth to the actual cell itself, we observed three specific bacterial types within this lab Gram-positive bacteria, Gram-negative bacteria, and cyanobacteria. We closely observed the features of cyanobacteria and were equal to(p) to differentiate them from other bacteria. We specifically observed gloeocapsa, merismopedia, anabaena, and oscillatoria. In addition to this we observed the different characteristics of prokaryotic organisms referring to size, form, color, elevation and texture, which helped us to at a lower placestand the diversity of these cell types in the kingdom Monera. Through culturing samples from both the toilet and our own mouths, we were able to observe Gram-negative bacteria. We also sketched our two examples of Gram-negative bacteria. Though we failed to observe Gram-positive bacteria, this whitethorn have been due to our sampling and staining procedur e. Because of the concentration of the sample towards the center, bacteria within this region atomic number 18 hard to see under oil dousing microscopy. If Gram-positive bacteria had been present, it was covered by layers of both Gram-positive and Gram-negative bacteria making it extremely difficult to differentiate while viewing under a light microscope. Introduction Most of the experiments thus far in this laboratory have covered many of the functions carried out within the cell much(prenominal) as enzyme activity, photosynthesis, reproduction, and genetics. This experiment gave us a chance to examine the overall single prokaryotic cell in its entirety instead of just the functions it locoweed carry out. We leave alone encounter 4 groups under the kingdom Monera archaeobacteria, Gram-negative bacteria, Gram-positive bacteria, and Mycoplasms. We will also examine the diversity of prokaryotic cell types. For example some are pathogenic, causing diseases, while other are saproph ytic, breaking down organic material, and further still some bacteria are autotrophs, making their own food through photosynthesis or chemiosmosis (Lab Manual, 2001). We will also examine the characteristics of these prokaryotic organisms such as the visible size, form, color, elevation, and texture of a liquidation or colonies. To get detailed observations of these various organisms we will view their occurrence through the culturing of samples by adding microbes onto a sterile medium within Petri dishes and allowing them to multiply. Finally we will also examine the features of cyanobacteria that distinguish them from other bacteria, and their role in nature. Materials/Methods First examine the plates prepared in the previous week and observe as many of your other classmates plates as possible.