B04 onion skin lab SNC 2D Name:______________________________ Lab: Investigation of the Structure of Onions Cells Purpose: To investigate the structure of onion cells and become familiar with some of the basic parts of a cell. This lab will also introduce you to the technique of preparing a wet mount slide. Materials: microscope pencil cover slips lens paper paper towels blank white paper ruler known field of views beaker tweezers glass slides eraser medicine dropper
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Cheek and Onion Cell Experiment The aim of this experiment will be to show that different cells have different structures and textures. Hypothesis I believe that viewing these different cell types under the microscope will show more detail and variations between the cells. Method Apparatus All apparatus was collected and setup as shown in the table below. CHEEK CELL ONION CELL Microscope Microscope Slide Slide Methylene Blue Iodine Spatula Microscopic Cover Slip Microscopic Cover
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The aim of this experiment was to investigate the effects of salt type and concentrations on the rate of heating and the boiling point. Then from this data make a conclusion which salt type and concentration is the most energy efficient at heating water to its boiling point. It was hypothesised that highest concentration of MgCl2 was going to be the most energy efficient at heating the solution to its boiling point. This is because MgCl2 has the lowest specific heat capacity thus will use the least
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“Cell Transport Lab” Hypothesis: I hypothesis that there will be a movement of molecules out of the egg‚ and will move into the water solution. Osmosis will occur within the egg‚ and in the process the molecules of the egg will diffuse. Time (hrs) | Observations | Circumference (cm) | * 0 | * Egg is of normal weight and size * No membrane is being shown‚ and is almost perfect | * 14 centimeters | * 24 | * Egg has gotten larger taking in some of the water * Shell is soft
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a) The table above helps us to understand why larger organisms need to become multicellular rather than just increase the size of their cells. The information in the table shows that as an organism gets larger in size‚ its surface area to volume ratio will decrease. However‚ the smaller the organism is‚ the greater its surface area to volume ratio will be. A small uncellular organism would have a large surface area in which diffusion (the movement of molecules) can take place. Diffusion is essential
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1. How does a cell become differentiated? A cell becomes differentiated by using only the DNA that it needs. 2. Give an example of 2 differentiated cells. Two examples of differentiated cells are lysosomes and mitochondria. Lysosomes are small so they can move throughout the cell effectively. Mitochondria have a lot of surface area to make more energy 3. (Essay) What does it mean to be specialized? Explain how the structure of the cell determines its function. Give at least 3 examples. Being specialized
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I need to control the algae bloom that occurs in my Fish tank. When the algae bloom‚ it alters the PH balance and is very damaging to fish kept in an aquarium. I already have one of the best filter systems and still the algae grow out of control at times. I need help with this issue. There are fresh water fish in the fish hobbyist community known as algae eaters. I have narrowed my research to two algae eaters‚ the Chinese algae eater and the Plecotomus Fish from South America. The algae eater
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Can We Bridge the Digital Divide? Jessica Montgomery INF 103: Computer Literacy Instructor Murray Denton April 15‚ 2013 What is the Digital Divide? The Digital Divide is a line that separates those that have access to technologies such as computers‚ cell phones and internet‚ from those that have no access or limited access to such technologies. This divide is mostly prevalievnt in third world countries‚ but is not uncommon in the United States. While the United States has the technology
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Digital Divide The Digital Divide is “the state of inequality that exists between people who have access to modern information technology and those who do not‚ since the former have many more opportunities open to them than the latter‚” (2008). Some argue that this gap is shrinking in the U.S. due to public access and mobile devices. Online learning is also a catalyst in bridging the gap‚ but the question remains; how will those who need it most gain the access they need? While this is a global
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EXPERIMENT 5 GAS DIFFUSION COEFFICIENT OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method KEYWORDS Diffusivity‚ Gas Diffusion Coefficient‚ Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion takes
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