Conclusion for experiment diversity of bacteria. Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13
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The conclusion of an experiment on the diversity of bacteria can provide valuable insights into the bacterial communities present in a particular environment. By analyzing the diversity of bacteria in a sample, researchers can better understand the roles that different bacterial species play in the ecosystem and how they interact with each other.
One important finding from such an experiment might be the presence of a high diversity of bacteria in a sample, indicating a diverse and healthy ecosystem. On the other hand, low bacterial diversity could indicate that the ecosystem is stressed or unhealthy.
Additionally, the presence or absence of certain bacterial species may provide clues about the conditions of the environment in which they were found. For example, the presence of certain types of bacteria may indicate the presence of specific pollutants or nutrients.
Overall, the conclusion of an experiment on the diversity of bacteria can provide valuable information about the health and functioning of an ecosystem. This information can be used to inform conservation efforts, pollution control measures, and other management strategies.
Growing Bacteria in Petri Dishes
Fungi are heterotrophs with chitinous cell walls composed of hyphae, they are generally multicellular and may reproduce sexually and asexually, most but not all, are found on land. Discover the presence of UV energy, and how special dyes in the beads produce colors. You can add a generous shot of chlorine bleach to the bag before sealing for an extra level of destruction. These proportions make enough nutrient agar to prepare two petri dishes. This change would be more helpful because it can be more different, and you would know the changes of the before and after part of it. All gram-positive bacteria have purple colour while all gram-negative bacteria have pink colour when observed under light microscope. There is also such thing as bacteria sex.
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B Next we used a bacterial inoculating loop to spread the inoculating material over the agar to produce isolated colonies. This makes sense because we know that gram-negative bacteria can be toxic due to the lipopolysaccharides in their cell wall. Seal the larger bag and dispose of it in the trash. At the end of the growing period, observe the petri dishes and write down, draw or photograph what you see. Measure and compare the size of the kill zone to determine the effectiveness of different antibacterial agents. Learn about sunscreen and SPF. We labeled the dish with a sharpie and left it for a week.
Finally we blotted the slide dry, being careful not to rub the smear off of the slide. Order extra petri dishes from our comprehensive selection of lab supplies at Steve Spangler Science. Test various surfaces in the bathroom to see which one has the most germs or the greatest variety of bacteria. We viewed the petri dishes a week later and determined how many colonies grew, whether they were gram-negative or gram-positive, and the differences in their morphological features. Results For the E. When the water pond is stained by methylene blue at the slide, we can observe some Rhizopus conjugation via light microscope.
Therefore, to favour the selective growth of beneficial bacteria, appropriate environmental hygiene is required. Sample the germs on your hand before and after washing them. Procedure Three - Gram Staining 1. The observation made was recorded. A quart-sized bowl works great. From the samples we swabbed, we expected to find two or more different colonies of bacteria.
Bacteria can be found everywhere, from in the air, water, soil, on your body, and in your mouth. Both protist and fungi have various kinds of shape and there are bacteria in water ponds that can only be detected under light microscope after stained either with iodine or methylene blue. Compare the number, color and size of colonies grown from different test locations. To identify different shapes of bacteria Student Learning Time SLT : Face-to-face Non face-to-face 2 hour 0 Introduction Gram stain is a widely used method of staining bacteria as an aid to their identification. Gram staining is a differential staining method which results in the classification of two groups of bacteria, Gram-positive and Gram-negative. We used thongs to hold the slide and passed it through the bunsen burner to dry and warm it. Each bacterium grows and divides independently of any other bacterium, although Morphological features of bacteria The Gram stain.
Nothing will beat the bacteria experiments from Steve Spangler Science. Better yet, make three dishes: one as the control just germs , one with an anti-bacterial sanitizer and a third dish with a different brand of anti-bacterial sanitizer. In the next part of our experiment we swabbed various surfaces, the bottom of our shoes and the classroom light switch. The prepared slide was observe under a light microscope. To identify the characteristic of protist and fungi. We removed the excess iodine from the slide and rinsed it in each of the beakers of fresh water.
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Our culture was heavy so we also put one loop of water onto the slide to dilute the sample. After dialysis in the buffer for 24hrs, the sample was subjected to gel filtration. The result indicated that the bacteria were detected as Klebsiella pneumonia, Enterobacter aggromerans, Pseudomonas, Ralstonia pickettii and Burkholderia. Salmonella Typhi Rhizopus Conjugation. Procedure 3-9 was repeated by using iodine instead of methylene blue. We gram stained three of the colonies and found that they were all gram-positive bacteria.
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All five prepared slides that contain Streptococcus pyogenes, Salmonella typhi, Rhizopus conjugation, Cup Fungus Apothecium, and Volvox Flagella were observed by using a light microscope. Before growing anything, some people place each Petri dish into separate zipper-lock bags. Learn about what shapes a bubble, even making your very own square bubble with the Bubblology Science Kit. After a week's time we examined the agar for bacterial growth. This technique is based on the fact that the gram-positive bacteria's cell wall has a stronger attraction for crystal violet, based on the presence of more peptidoglycan, then does the gram negative bacteria. We next rolled the swab of bacteria onto one quadrant of the agar.
