anything covered in lecture may appear on the exam. Membrane Transport 1. Describe the cell permeability and membrane transport. What can enter/exit the cell on its own? What requires assistance? Why? 2. Describe membrane potential. What is it? How is it established? How does it influence the transport of charged molecules? What are the components of the electrochemical gradient? 3. What are the different types of membrane transport? Describe each in detail. Which move solutes
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R E V I E W NAME______________________________ LAB TIME/DATE _____________________ S H E E T EXERCISE 8 Print Form Classification of Covering and Lining Membranes 1. Complete the following chart. Tissue types: membrane composition (epithelial/connective) Membrane cutaneous Common locations General functions epithelial‚ connective The skin protection against outside substances‚ keeps bacteria out‚ secretion. epithelial‚ connective mucous Lining of the digestive
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Membrane Functions: Aim: To demonstrate the process of osmosis using a chicken’s egg Hypothesis: I predict that the egg’s mass after 10 min. in the 5% salt solution would increase due to and balancing out the solution. In the 10% salt solution‚ the egg’s mass would decrease since there is a high amount of salt. In the dilute water solution‚ the egg’s mass will increase‚ as the membrane would take in that water. Materials: 1- One fresh egg 2- One plastic spoon 3- One plastic fork
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Lab report OSMOSIS TROUGH A SELECTIVELY PERMEABLE MEMBRANE Introduction: Molecules have kinetic energy. This causes the molecules of the cell to move around and bump into each other. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane (a membrane that only allows certain molecules to diffuse though). Diffusion or osmosis occurs until dynamic equilibrium has been reached. This is the point where the concentrations in both areas are equal and no
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Aim To investigate the effects of increasing salinity on potato cell mass. Background Information This experiment is based upon osmosis. Osmosis can be defined as the net movement of water molecules from a region with high concentration to a region with low concentration. This movement must take place across a partially permeable membrane such as a cell wall‚ which lets smaller molecules such as water through but does not allow bigger molecules to pass through. This process will take place until
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Children‚ Cell Phones‚ and Possible Side Effects There are possible health risks that go along with allowing a child to use a cell phone. This subject has been debated for years. Many researchers and health care professionals have done studies and given their opinions about it. Although cell phone companies do not opening warn you when you purchase a cell phone‚ I take the advice of risk very seriously. Being a mom‚ I found the following information very helpful when deciding that a cell phone
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Editing July‚ 13‚ 2016 The effect of cell phone on people’s lives Borrelli‚ L. (2013‚ July‚ 12). Five reasons why cellphones are bad for your health‚ Medical Daily. Retrieved from http://www.medicaldaily.com/5-reasons-why-cellphones-are-bad-your-health-247624 This reporting asserts the effect of cell phones on people health‚ Borrelli finds that cell phones lead to numerous health problems besides the vision problem. According to the Vision Council‚ most people are addicted to cell phone and they use it
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Dark Tech: The Effect of the Cell Phone on Health Today’s technologies are advancing at such an astonishing rate. This can make it difficult for even the most avid “techie” to keep pace. Technology is that wonderful thing that brings comfort and convenience to our lives. But‚ with that comfort and convenience‚ there often comes a price; and the technology of the cell phone proves no exception. Arguably‚ as a communication tool‚ the cell phone has no equal in how it has changed and affected
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Effects of Sucrose Concentration On Cell Respiration In Yeast Abstract This lab investigates the effects of Sucrose concentration on cell respiration in yeast. Yeast produces ethyl alcohol and CO2 as a byproduct of anaerobic cellular respiration‚ so we measured the rate of cellular respiration by the amount of CO2 produced per minute. The results show a trend wherein increased concentrations of sucrose increase the rate of cellular respiration. Introduction All living cells require energy
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Planning Exercise Aim To investigate the effect of phosphate on cell division in root tips. Background knowledge Phosphate ions (macronutrients) are needed large amounts by plants. They are required for root growth. For the root tips cells to divide‚ mitosis has to occur. Phosphate is needed for production of ATP which provides energy for mitosis to occur. DNA replication occurs during interphase of the cell cycle. DNA is made up of nitrogen containing base‚ pentose sugar and phosphate group
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