Cell membrane: The cell membrane surrounds the cytoplasm of a cell and its job is to protect the inside of a cell by only allowing certain substances into the cell and keeping other substances out. It also helps to support the cell and maintains its shape. Nucleus: This is the biggest part of the cell and is the part of the cell which acts like the brain. It is not always in the middle of the cell but will be placed within the cytoplasm. In some cases a cell may have many nuclei and these are
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Joshua McMahon IB Chemistry Matt Chase 3A 2/13/15 Finding the PH of different concentrations of orange juice. Research Question By diluting concentrated orange juice with water‚ can you significantly change the PH value? Introduction Across the world‚ it is thought and widely accepted to believe that Orange juice is the cure to many terrible diseases. However‚ this may not be true anymore. It has been said that Oranges are very high in vitamin C‚ therefore one should drink it every morning
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"Cells‚ Cells" Original Rap by Ms. Quitmeyer Today’s the day were gonna learn about the cell If I teach it okay‚ you’ll know it very well So listen up 6th graders- -no room left for haters- lets talk about the building blocks of life- cells that make us. Chorus: Cells‚ cells they’re made of organelles Try to pull a fast one‚ the cytoplasm gels The nucleus takes over controllin’ everything The party don’t stop ’till the membrane blocks the scene Inside the vacuole we can float around
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Summary Expectations: Example Summary (15 total points for every summary) Student Name Partner(s): None Chem 253—TA: TA Name Lab 1: Effect of pH on a Food Preservative (we’ll used this as an example) Date of Experiment Purpose (1 point) Should be a very brief statement such as: To determine the effect of pH on the food preservative Sodium Benzoate. Theory (2 points) In this section you should briefly summarize what the textbook says in regards to the history and uses of
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LAB 1 1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points) a. Eye Wash (2 points) The eyewash fountain is used to rinse chemical splashes off the eyes. They are used by rinsing the eyes 15 to 30 minutes with water. b. Fire Blanket (2 points) Fire blankets are used to extinguish small fires. They are used by covering the small fires with the blankets until it extinguishes. c. Shower (2 points) Safety showers were made to eliminate any
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The Effect of Temperature on Beet Cell Membranes and Concentration of Betacyanin Released Introduction Membranes are an important feature of plant cells and they act as a barrier that separates the interior of the cell from the external environment (Campbell et al.‚ 2008). Each membrane layer is composed of a phospholipid layer‚ which is semi-permeable and possesses the ability to control the movement of diffusion. Within the centre of a cell‚ the vacuole that is responsible for storage and
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Effect of Enzyme and Substrate Concentration on Reaction Rate by Zachary A. Poché Biology 155 Laboratory October 15‚ 2014 Lab Partners: Cade White‚ Hannah Ragas‚ Russheka Aremillion ABSTRACT In order to increase the reaction rate‚ substrates attach to the active site of enzymes which decrease the activation energy required to convert substrates to products. We examined the effect of enzyme concentration and substrate concentration on the overall rate of the reaction. To determine
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not the CO2. Principle: The Cohesion-Tension Theory is one of the force which cause the movement of water and hence the transpiration. As water evaporates into the air space‚ the drop in water potential in the mesophyll cells causes water to be drawn from neighbouring cells along the gradient of water potential and finally from the xylem through the apopast and symplastic pathways. In the experiment‚ we would like to take a look at two factors which can affect the rate of the transpiration
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Testing the pH of Common Household Substances Lab Background Information: The pH scale is used to determine the acidity or basicity level of liquid solutions. If a solution scores a pH level of 1-6 it is an acidic solution‚ 1 being the most acidic and 6 being the least acidic. If a solution rates a pH level of 7 it is a neutral solution‚ meaning it is neither an acidic nor a basic solution. Lastly‚ if a solution is 8-14 on the pH scale it is a basic solution‚ 8 being the least basic and 14 being
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carrying capacity (about 50 million cells/ml) in the wort‚ or must‚ and remains suspended in solution in order to expose maximum surface area to nutrients. Assuming no oxygen is added back to the fermenting wort‚ yeast will continue fermentation until one of two things happen - either alcohol concentration will exceed tolerance‚ or yeast runs out of food. 1 Figure 1 Process of Glycolysis and Anaerobic cell respiration in Yeast Hypothesis
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