Ligia Ramos 11th Grade HL Biology – Ms. Bartels Due Monday October 21st Limitations on Cell Size Research Question: What is the correlation between surface-to-volume ration and ion exchange and how does this relate to cells? Evaluation of Method and Results: Errors/ Limitations: | Suggestions for improvement: | Impact on Results: | Precision - Human error –cutting cubes freely‚ resulting in very different sized cubes‚ especially for the 1cm x 1cm x 1 cm cubes. All the cubes also had slightly
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8 themes of biology relating to the cell membrane Science as a process: Science is a process which encompasses many methods in order to reach a final conclusion. This relates to the cell membrane because it carries out many processes to reach a final product. For example‚ the cell membrane forms a barrier between the inside of the cell and the outside‚ so that the chemical environments on the two sides can be different. The cell controls those differences to optimize the working of the organelles
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century‚ little was known about cell membranes. Until the early 1950s‚ the biological cell membrane was rarely mentioned in scientific literature. It was recognised that something was probably there‚ but hardly anything about it was known. Considering the lack of technical equipment available a century ago‚ scientists such as Charles Overton and Edwin Gorter were not only exploring new territory in looking at the properties of cell membranes‚ but laying the way for future cell biologists. Scientists had
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– the number of electrons in the outermost shell Isotopes – elements that have the same atomic number but different atomic mass Distinguish between elements and compounds; name the most abundant elements in the human body if water is included; name some that are crucial but less abundant An element is a pure substance that can’t be broken up A compound consists of two or more different elements Carbon‚ Hydrogen‚ Oxygen‚ and Nitrogen are the most abundant elements Iron and Iodine are crucial
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Beetr------------------------------------------------- The Effect of Temperature on Membrane Permeability in Beetroot Cells Stage 2 Biology 2013 Results Figure 1 Temperature | Absorbance at 530nm | 30°C | 0.407nm | 40°C | 0.457nm | 50°C | 0.518nm | 60°C | 0.622nm | 70°C | 0.672nm | 80°C | 0.859nm | The table above gives an example of how a higher temperature has a greater
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Which of the following are also found in the cell membrane: lipids‚ proteins‚ or carbohydrates? What is the role of steroids in a cell membrane? Cell membranes contain all three of the above groups‚ lipids are found abundantly in cell membranes‚ steroids are a type of lipids which helps with membrane fluidity by restricting the motion of the fatty acid tails. PROTEINS 1. Scroll down to proteins. List the six functions
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There are many kind of cell membrane disease‚ There are : Cystic Fibrosis Cystic Fibrosis is a disease that cause by gene mutation of CFTR Protein. CFTR it’s stand for Cystic fibrosis transmembrane conductance regulator. This disease causes too much production of thick mucus‚ then the mucus will blocked the ion transport in epithelial cells that line the passageways of the lungs‚ pancreas‚ and other organs. If the passageways of the lungs is blocked by the thick mucus‚ it will make the sufferer
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Purpose: The purpose of this lab is to test the effects of osmosis on eggs in hypertonic solutions and hypotonic solutions. Hypothesis: If the corn syrup is a hypertonic solution‚ then the egg’s size will shrink. If the water is a hypotonic solution‚ then the egg will swell. Materials: Styrofoam cups (2 per group) Styrofoam cups to weigh down egg (2) Balance Paper towels Vinegar (enough to cover egg) Distilled water Corn syrup Fresh eggs (2 per group) Procedure: Day
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belatin leak out of cooked Beetroot? In cooked beetroot‚ the water or food would become stained due to its leakage of betalin (the redish-purple pigment). Betalin is found in the vacuole of beetroot cell. The leakage may have been caused by something happening in the cell membrane of the beetroot – concerning the proteins embedded in the phospholipid layer. The study will require the experiment of different temperatures of water and to find out which in temperature causes the most leakage of the
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BioLab3 Cell Membranes Lab Report Student Name: I. Diffusion Define the following terms. Solvent Solute Solution. Diffusion Concentration gradient Dynamic equilibrium EXERCISE 1 – Factors influencing rate of diffusion Predict how molecule size and temperature will affect the outcome of this experiment. Record the data from the information in the lab. Potassium Permanganate R.T. Methylene Blue R.T. Time (min) Total Diameter
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