DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried‚ weighed and added to the test tubes. The discs were then weighed again after a period of 24 hours. The percentage change in mass was then calculated. Apparatus.  Specimen tubes with stoppers x6  1cm3 diameter cork borer  razor
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Osmosis Osmosis is just a special case of diffusion - where water diffuses through a membrane which has different concentrations on either side. Permeable means "allows anything to pass through". Membranes in cells allow small molecules (water) to pass through‚ but prevent bigger ones from passing. This is called "selectively permeable". Take a look at the following animation; If a selectively permeable membrane separates the two solutions‚ water moves through it in both directions at the same
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OF MAMMALIAN CELLS AND THE DIFFERING FUNCTIONS OF THESE COMPARTMENTS? Mammalian cells are eukaryotic this means that all of their cells have common components‚ membrane bound organelles which prokaryotic cells do not this is shown in figure 1. Organelles are purpose made to carry out a specific function that is necessary within a cell. Due to the specificity of both conditions and concentrations with in these organelles these are compartmentalized. Encasing the organelle in a membrane allows is to
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Jaycar Electronics Reference Data Sheet: BATTPRIM.PDF (1) PRIMARY CELLS & BATTERIES Many portable electrical and electronic devices are designed to be powered from batteries and in a lot of cases‚ from primary or non-rechargeable batteries. This is the familiar kind of battery which has a fixed amount of energy stored in it during manufacture‚ and once that energy has been used up the battery is simply thrown away and replaced. There are many different types of primary battery now available
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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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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 09/20/11 page 1 Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No‚ not at all. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and
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Animal and plant cells Part Function Nucleus Contains genetic material‚ which controls the activities of the cell Cytoplasm Most chemical processes take place here‚ controlled by enzymes Cell membrane Controls the movement of substances into and out of the cell Mitochondria Most energy is released by respiration here Ribosomes Protein synthesis happens here Extra parts of plant cells Part Function Cell wall Strengthens the cell Chloroplasts Contain chlorophyll‚ which absorbs light energy
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11/8/2014 Security Market Line And Beta Basics - Complete Guide To Corporate Finance | Investopedia Free Newsletters | Free Annual Reports | Register | Sign in DICTIONARY INVESTING Continuing Education MARKETS Exam Prep Quizzer PERSONAL FINANCE ACTIVE TRADING FOREX EXAM PREP Symbol TUTORIALS SearchSearch Search Investopedia VIDEO SIMULATOR FAQs Set yourself apart: CIPM® Claim your US$100 early bird discount before 15 December 2014. Complete Guide To Corporate Finance Chapter One
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3) Slide 3: Why is the nucleus of the cell in slide 3 so large? In other words‚ what is this cell doing that requires that its nucleus be so large? (Please be specific). In eukaryotic cell in slide #3 has organelles including a nucleus containing DNA and mitochondria energy organelles .Compared to the prokaryotic cell which has the DNA in the cytoplasm smaller and simpler and doesn’t contain a nucleus or other organelles‚ it does have cell membrane. Bacteria and Archea are single celled prokaryotes
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are important to understanding cell injury and cell death regardless of the injuring agent” (Heuther & McCance‚ 2012). Cellular injury arises when a cell is unable to sustain homeostasis. The injury can be reversed if the cell can recover from whatever damage was done but if it does not recover the cell will die. The three common forms of cell injury are hypoxic injury‚ free radicals and reactive oxygen species injury‚ and chemical injury. The most common form of cell injury is hypoxic injury‚ or
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