substances through several ways‚ like diffusion? Aim: To plan and carry out an investigation to show the relationship between volume/Cm3‚ surface area‚ and diffusion using agar cubes measured in time/s; and to demonstrate‚ using diffusion‚ why the size of cells is limited‚ keeping the room temperature and pressure constant. Hypothesis: I expect to find that when the surface area to volume of a cell reaches a certain level‚ diffusion alone won’t be able to supply the cell materials needed‚ and as single-celled
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12. Provide a description of a cell surface specialization. A cell surface specialization can be defined as an extension of the cell surface which performs a specific function for a larger organ or tissue. Examples of cell surface specializations include microvilli‚ cilia‚ stereocilia‚ and goblet cells. Microvilli can be described as tiny finger-like folds made of microfilaments in the cell membrane‚ and functions to increase surface area for absorption. Cilia are longer‚ more hair-like projections
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squared) Height= 170cm divided by (∏ x 3 squared) Height = 6.01 round of to 6cm Allowing 1 extra cm for room Top and bottom of cylinder = 6cm + 1cm = 7cm Height= 6cm + 1cm = 7cm Total surface Area= area of base + area of top + Area of circle = (∏r squared) + (∏r squared) +( ∏ x Diameter x height) = (∏ x 3.5 squared) +(∏ x 3.5 squared) +(∏ x7x7) = 230.90cm cubed 1b The net
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vivid and sweet memory of the time she spent in the ponds. There‚ she lie down her stomach and watched into the water learning the natures ’ secrets from Matt. “Her braids bob up and down in the water‚ making tiny ripples which tremble out across the surface of the pond. She is “completely absorbed” (Lawson p.5). In addition‚ the pond times Kate spent
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Sculpting the Earth’s Surface Paper Sculpting the Earth’s Surface Paper GLG 101 4/6/2012 The Ganges River Basin‚ along with its tributaries travel amongst three different countries. One of these includes the southern region of Bangladesh. The main source of freshwater in Bangladesh comes from the Ganges River. Water and soil pollution is now one of the major problems occurring in Bangladesh and the Ganges River Basin. It has been an ongoing problem for many years so it is not like it
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able to do the following. • • Explain the use of the surface heat transfer coefficient. • Explain the use of the overall heat transfer coefficient. • Combine convection and conduction theory to solve problems involving flat‚ cylindrical and spherical surfaces. • Explain the basic theory behind radiated heat transfer. • Explain the affect of the emissivity and shape of the surface. • Calculate effective surface heat transfer coefficient. • (c) D. J. Dunn Explain
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The Aspire of Importing and Exporting _______________ gave this class a chance to help them figure out which floor matting will help a cargo box stop from moving. One factor that is used is friction. Friction happens when two surfaces rub against each other and may cause heat. Also there are four types of friction which are static‚ sliding‚ rolling‚ and fluid friction. The company needs the class to find out what type of flooring is best to use to stop a cargo box from moving. They have game
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piece must be kept the same in each experiment primarily because they affect the surface area of the piece‚ and varying surface area could have a great effect on the rate of osmosis. This is because in an experiment where the potato chip has a large surface area‚ there is a larger area of partially permeable membrane and therefore more opportunity for water particles to pass through. I will keep the surface area the same by keeping the mass and length of the potato piece the same in each
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bubble The secret to a good bubble is something called surface tension‚ an invisible bond that holds water molecules together. Water is a polar molecule‚ so it has plus and minus ends just like magnets that attract each other. When the water molecules align with each other they stick together‚ creating surface tension. You might think that it is the surface tension of the water that holds the skin of a bubble together. Actually‚ the surface tension of water is too strong to make a bubble. You can
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Carp Bait - Part Four Fishing with surface baits is both an exciting and very productive method for catching carp. On many waters‚ it’s often an under-used tactic‚ which is a big mistake‚ because some of this country’s biggest and most sought-after carp are often caught on surface baits at this time of the year. Even if the lake that you are targeting has been hammered on floaters and the carp are starting to wise up to the approach‚ often a change to an alternative floating hook bait is all that
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