Vegetable oil is hydrophobic and there for is not water soluble but alcohol on the other hand is completely soluble with vegetable oil. 3. We know from observing the vegetable oil and water together that the relative density of water is greater then the density of vegetable oil because the oil will always recede to the surface of water. 4. Emulsification agents allow for two unbendable liquids to be combined, the detergent hold properties that both substances can in return blend with leaving detergent dissolving in both the water as well as the alcohol unlike other substances we tried to
For instance, Lactobacillus acidophilus — a harmless bacterium that resides in your intestines — helps you digest food, destroys some disease-causing organisms and provides nutrients. Many disease-causing bacteria produce toxins — powerful chemicals that damage cells and make you ill. Bacteria can multiply very rapidly if given the right environment. Viruses are much smaller than cells. In fact, viruses can only be seen by electronic microscope. To reproduce, viruses invade cells in your body, hijacking the machinery that makes cells work.
They are even smaller then bacteria. They can’t multiply on their own so they have to invade a host cell and take over its machinery in order to be able to make more particles. They cannot reproduce without a host cell that’s what makes them unique organisms. Viruses consist of genetic materials (DNA OR RNA) surrounded by a protected coat of protein, liquid.Virsuses may lead to mild to severe illnesses in humans for example it can cause flu or a common cold to something more life threatening like HIV/AIDS.A virus can enter your body from a break in the skin or from inhaling it from the air we breathe in.Viruses are also immune to antibiotics. 1,1 Fungi is neither a plant nor an animal it is a member of a large group of eukaryotic organisms.
Refrigeration slows food spoilage because the lower temperature slows binary fission. Under optimal conditions with no limiting factors prokaryotes can grow exponentially. 3. Some bacteria can form endospores in response to harsh environmental conditions. An endospore is a chromosome surrounded by a durable wall that can resist desiccation, freezing and boiling water.
Discussion & Conclusion In this experiment we learned how to synthesize the cyclohexene by dehydration of cyclohexanol. We procedure the first step where we have to mix the components. Then we heat the R.B.F with a fractionating column, distilled water. Then we obtained the layers, and we transferred the organic layer to a small, dry Erlenmeyer flask. We added anhydrous Sodium Sulfate as a drying agent.
In the toxic mussels, the visible light absorption spectrum revealed a pattern that was characteristic of phytoplankton pigments. With further investigation, the pigments were found not to be poisonous though, and the aqueous layer consisted of the toxin. Column chromatography was used to separate the layer into organic acids and bases. Acids that were ionized quickly passed through because the resin called XAD-2 would not hold them in their polar ionized form. Out of all the acids that passed through, only one was found to be toxic.
Identify the processes (e.g., coagulation) that were used in this lab and describe how they were performed. You start out with the contaminated water that has not been filtered out or has not had any chemicals added to it, this is many done so air can meet the water and this gives the chemicals and gases to release. I then added Alum to the dirty water since when mixing Alum with the dirty water it allows all the big particles to “stick” to the Alum and then pushes all of these particles to the bottom of the water. The dirty water is then put through a filter of sand, charcoal, and gravel in order for any of the smaller particles to stick to them and makes the water clean and free of any other particle. After I did all this I then had to add a few drops of bleach so I could disinfect the water from any other dirt
This is done when we use the bathroom. Water also helps break down food in our stomachs. Without water it would be impossible for our body to break down the food that we eat and goes to our blood cells and that’s what gives us energy. There are also other reasons that our body needs water. Water also acts as a shock absorber for our eyes, brain and other vital organs.
Actually, cross contamination is simply defined as the transferring of bacteria from one place to another and can occur anywhere. Hospitals are a hotbed for bacteria. Infections of any origin can easily spread in this environment as patients, visitors, and employees come into daily contact. Cross contamination can occur via direct contact, airborne, or through a vehicle (e.g., needle or catheter). Although it has become common knowledge that washing your hands is easiest way to eliminate bacteria, the task is often overlooked or underperformed.
Bacteria will not multiply in dry areas, but as soon as liquid is added, for instance to dried food like powdered milk and dried eggs, the products will provide ideal conditions for bacteria to multiply. However, if enough salt or sugar have been added to foods such as bacon, savoury biscuits, jam and confectionery, this will absorb the available moisture in the food so the bacteria cannot multiply as easily. It is not only moist foods that provide the right environment for bacteria, though. Moist skin or damp areas of an environment will also provide the right atmosphere for bacterial growth. Nutrients Bacteria, like all living things, need nutrients to survive.