The affect of temperature on the rate of movement of woodlice Aim: The aim of this experiment is to establish whether a change in temperature affects the rate in which woodlouse move. I measured the rate by timing the woodlouse to move a set distance of 20cm‚ and altered the surrounding temperature by submerging a clear tube in water with different temperatures controlled by a water bath. Research: It is to be believed there over 3000 different species of woodlice‚ a total of 42 species
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heat losses)‚ and most importantly‚ the latent heat phase change of the refrigerant in the ground itself. While they require much more refrigerant and their tubing is more expensive per foot‚ a direct exchange loop is shorter than a closed water loop for a given capacity. A direct exchange system requires only 15 to 30% of the length of tubing and half the diameter of drilled holes‚ and the drilling
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that the molecules move across the cell membrane is that the carbon dioxide molecules spread out rapidly out your red blood cells down their concentration gradient to your lungs. When water molecules move freely through your cell membrane is called osmosis as we learned last unit. The reason why molecules move across the cell membrane is because they are small molecules that have no charge like oxygen which the cell membrane need to survive. So basically the molecules that move across the cell membrane
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1. a. List four cell structures that were common to both plant and animal cells. (4 points) b. What structures were unique to plant cells? (2 points) c. What structures were unique to animal cells? (2 points)--Answer below: a. 1. Rough ER 2. Smooth ER 3. Golgi Apparatus 4. Nucleus b. 1. Chloroplast 2. Cell walls 3. Vacuole c.
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Water Transport in Plants Introduction In this lab experiment‚ we set out to examine the different transpiration rates of a plant system in certain environments. Water is transported in a plant by the process of transpiration‚ which is the loss of water through evaporation from the surface of leaves. The stomata in leaves are responsible for the diffusion of water vapor. Transpiration brings water upward through the xylem in the plant. There are certain factors that can affect transpiration
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secretion‚ osmosis‚ and faulty water reabsorption. Two of three etiologies of diarrhea occur mainly in the small intestine: active secretion and osmosis. Active secretion pertains to bacterial invasions such as Vibrio cholerae‚ toxins‚ irritants‚ and excess bile and fat. According to Dr. Bharucha‚ diarrhea that’s caused by food poising is because “most enterotoxins block Na+-H+ exchange‚ which is an important driving force for fluid absorption in the small bowel and colon” (Bharucha‚ 2007). Osmosis is the
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Lorraine Torres John Payne CRN 10208 9/22/14 The Trigging Glare Every time that I go to the beach and I look into the ocean I see the glare of the sun reflecting on the water. I think that’s such a beautiful example of scenery‚ and it just triggers my memory back to Lake Havasu. Every summer for the past four years our family goes on a trip to Lake Havasu. It’s located in Arizona‚ in the border line of California and Arizona. It’s probably one of the best trips I’ve been on‚ and I looked forward
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Question: investigate the water potential of potato tissue? Introduction All cells require essential materials to ensure their survival. Chemical‚ physical‚ and biological processes are used to move these materials inside of cells. Similar processes move waste materials outside of cells. These processes can be passive‚ occurring as a result of basic physical laws and requiring no outside energy from the cell or they can be active‚ requiring energy expenditure. Since all molecules possess kinetic
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saline feedwater liquid can be divided into five classifications: distillation‚ membrane‚ humidification‚ freezing‚ and chemical . 2 The two main desalination processes used today are the desalination by distillation and the desalination by reverse osmosis. Within each method of desalination there are several other processes involved. Distillation processes are the most commonly used methods of desalination as well as some of the oldest methods.1 In 1869‚ the British Government built the first steam
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What is osmosis? Osmosis is the diffusion of water molecules through a semi permeable membrane. Why is it important? It is important to know what Osmosis is‚ and to understand it so that we understand what we are measuring‚ and so that we can use this understanding to apply to other situations so that we can gain further knowledge. We can also use this understanding to analyse our results. What we will do: We will put potato pieces of similar sizes in to test tubes of different concentrations
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