Oxygen toxicity

Question: How do different surface areas affect bacterial growth? Hypothesis: I think that the bacterial growth will be different in terms of size, shape, type and color. I think that different bacterias will grow on each quadrant because each surface of collection has unique bacterias. The unique bacterias will contribute to the fact that the size and color of them will also be different. I also predict that the growth of bacteria on the toilet seat (1D) will have the most colonies because it…

The best way to determine which concentration of salt water is ideal for hatching brine shrimp is to create a controlled experiment. This experiment would utilize four containers of water including; a 2% salt water concentration, a 4% salt water concentration, a 6% salt water concentration, and a container of fresh water, to set a base number of brine shrimp hatchlings for the experiment. Besides containing the salt water concentration, and the brine shrimp eggs, each container should receive…

dopaquinone is converted to melanin in the hair follicles, skin and the retina. Tyrosinase is also responsible for the brown color that forms on the inside of fruits and vegetables after they have been cut. The tyrosinase catalyzes the reaction with oxygen and catechol. Catechol is an organic alcohol found in most plants. Tyrosinase and catechol oxidases have a binuclear type 3-cooper center.…

Glow sticks have many uses to them and many people use them in a number of situations as well. One important aspect of glow sticks is that they are water proof, so if you ever go scuba diving or just want something to light up in your pool then glow sticks are perfect for that. Another feature of them is that they do not require any batteries at all so they are very simple to use, and one final thing that is interesting about glow sticks is they generate an insignificant, or small, amount of…

Yes, I believe that using controlled fires to protect wild areas are beneficial. Controlled fires help maintain the health of an existing natural area containing native plants and they help manage weeds and other growth, which helps to reduce the risk of wildfires. Fire is one of the best outdoor management tools for invasive plant control. For over 10 years ecologists have been using this technique, which has spread to many other trained people to use as a tool. Woodlands, prairies, and…

Explain the difference between aerobic metabolism and anaerobic metabolism. Aerobic metabolism occurs in the cell’s mitochondria and requires oxygen, anaerobic metabolism occurs in the cytoplasm and it does not require oxygen. During aerobic metabolism the hydrogen and carbon molecules from dietary fats, proteins, and carbohydrates are mixed with oxygen to form carbon dioxide and water as energy is released. These end products that are produced during aerobic metabolism are to some extent…

Emma Kilgore Science Period 2 January 12, 2016 The Evaporation of Liquids When a liquid is left in a warm car over a certain period of time some people might notice that the liquid seems to have lessened. This is because of evaporation, evaporation is when a liquid changes into a gas because of an increase in temperature or pressure. This brings up many questions having to do with liquids and evaporation so, do all liquids take the same amount of time to evaporate?…

Figure 2.1 perbromate (BrO4-) is an ion. It carries a molar mass of 143.902 g/mol. Perbromate has 32 valence electrons; bromine carries 7 and oxygen carries 24 plus one since it is an ion. The Lewis structure of perbromate is a tetrahedral. Although the structure contains 32 valence electrons, it obtains a total 1 single bond and 3 double bonds. The oxygens in the Lewis structure follow the octet rule however bromine does not. Bromine (besides hydrogen) does not follow the octet due to certain…

plants because they contain Chlorophyll, used in photosynthesis. The Chlorophyll is what made it possible for plants to absorb and process the sun's energy and combine it with carbon dioxide and water to grow and make food. Photosynthesis also releases oxygen for humans to breath. 2) List two reasons and explain why the chloroplasts were helpful for the sea slug. One reason for why the chloroplasts are helpful for the sea slugs is because they store up the chloroplasts in order to become…

The Freezing point of water is 32° fahrenheit, But does anything affect the freezing point of water? The effect of salt and sugar lowering water’s freezing point is called Freezing Point Depression(FPD). When water freezes, its molecules slow down and “stick” together, and eventually slow down so much they stay in place and become a solid. However when salt or sugar is added, it “interferes with the formation of the crystalline bonds between water molecules that give ice its solidity”, Written…