project is to demonstrate how water temperature affects the dissolving of sugar in liquid. Everything in our universe is made up of particles which are in constant motion. In a solid state particles move the slowest while in a liquid state particles move the fastest. Under the right conditions‚ solid particles (the solute) when mixed in liquid (the solvent) can form a solution. This occurrence is called dissolving. I wanted to answer the question; does the temperature of water affect the speed at which
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17th‚ October 2010 Margarita SA: VOL RATIO AND AGAR BLOCKS Conclusion: For this experiment the agar jelly had to be cut in to five different block sizes‚ after that has been done we had to add all five blocks in to the test tube with the acid and time to see how long it would take for the colour to change from a pinky purple to clear. From this experiment I learnt that the bigger the size of the jelly is the
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think that more oxygen will be released from the Hydrogen Peroxide and Catalyse. We will be measuring the two main factors: - * Oxygen - the amount released from the Hydrogen peroxide * Time - The duration of the reaction The room temperature may be a factor that will affect our results.
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significantly more nongated K+ channels than cell B‚ which cell has the larger resting membrane potential? Explain. If the permeability to K is higher in A than in B‚ then the resting membrane potential (rmp) will be closer to the equilibrium potential in cell A‚ which means the rmp will be more negative in cell A than in cell B; or in other words‚ the potential difference will be LARGER in cell A. 2. Predict the effect of a reduced extracellular concentration of Na+ on the magnitude of the action potential
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Cell Membrane Transport Cell Membrane Transport Hands-On Labs‚ Inc. Version 42-0034-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a su Premium 609 Words 3 Pages Diffusion and Osmosis of Solutes and Water Across a Membrane Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding
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were 2‚4‚7‚9 and 10. All of these solutions affected the beetroot‚ but the most acidic solutions were the ones that did the most damage to the membrane. This is because the ph affects the proteins within the phospho lipid bi-layer. The acidic ph breaks the hydrogen bonds therefore denaturing the proteins and allowing beetroot pigment to secrete form the cell. 7. The ethanol solutions that were used were 11%‚ 25% and 50% ethanol. The beetroot cell was almost immediately affected by the 50% alcohol
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Biological Membranes Lipid Membranes • Receptors‚ detecting the signals from outside: Light Odorant Taste Chemicals A Hormones Neurotransmitters Drugs • Channels‚ gates and pumps • Electric/chemical potential Neurophysiology Energy • Energy transduction: Photosynthesis Oxidative phosphorylation • • • • • • Structure Function Composition Physicochemical properties Self-assembly Molecular models highly selective permeability barrier Internal membranes for organelles Bilayer Permeability
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What is Cancer? All living things are comprised of a variety of cells‚ such as kidney cells‚ brain cells and skin cells. Cancer develops when a particular cell mutates‚ then begins to grow and divide. Eventually‚ these cells form a mass called a malignant tumor‚ which often starts to invade surrounding tissue and organs. Super Foods It is thought that up to one third of cancer related deaths could be diet related. Many of the foods we eat today can in fact be harmful to the cells in our bodies
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DNA Structure Monday‚ 15 April 2013 9:01 AM - DNA = Deoxyribonucleic acid DNA is a double-helix: it has two strands that twist around each other Each strand is made of single units call nucleotides It has a sugar-phosphate backbone Bases join the two strands by hydrogen bonds ○ These bases are cytosine‚ guanine‚ adenine and thymine. - Complementary base pairing is a key idea in genetics: C pairs with G‚ and T pairs with A. - Each strand of DNA can be millions of base pairs in length and is
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BIOL 2010 ANATOMY AND PHYSIOLOGY I Chapter 4: TISSUES AND MEMBRANES Outline of Notes I. Introduction. A. General: Cells are highly specialized and interdependent on one another. Groups of similar cells performing similar functions are called Tissues The study of tissues is called Histology. Organs are made of tissues. A detailed understanding of tissues will greatly help your understanding of organs and organ systems later in this course. Tissues are classified into 4 main types:
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