Diffusion in Cells Isabel Zak Question: How does the size of a cell affect the distribution of chemicals throughout the cell? Hypothesis: The larger the cell is‚ the more difficult it will be for the chemicals to reach the centre of the cell‚ and diffuse throughout it. This is because there will be a higher surface-area to volume ratio in the larger cells‚ making the centre of the cells further away from the surface. Therefore‚ when dipped in sodium hydroxide‚ the larger cells will not be
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THE EFFECT OF TEMPERATURE ON CATALASE RESEARCH QUESTION: What is the effect of various temperatures‚ 0°C‚ room temperature‚ 37°C‚ 50°C‚ 60°C‚ on the number of oxygen gas bubbles liberated‚ in a decomposition reaction between the enzyme Catalase‚ obtained from crushed mung beans‚ and 2% of the substrate Hydrogen Peroxide? INTRODUCTION: Enzymes are biological catalysts that increase the rate of chemical reactions without they themselves being involved in the reaction itself. Enzymes are proteins
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larvae had formed their chrysalises each student put 1 of their containers into a cold climate approximately 45°F‚ 1 in a warm climate approximately 85°F and 1 stayed out at room temperature approximately 72°F. The larvae spent a total of 5 days in each climate‚ and then they were removed and brought back to room temperature. Then the waiting game started to see how long it took each larva to go through metamorphosis and emerge as a butterfly. Based on the data that was recorded it looks like the larvae
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Beet Cell Lab Purpose: The purpose of this Lab was to see how much pressure or stress the beet tissue would hold. Hypothesis: I hypothesize that the higher % of the solvent that the higher the colour intensity will be shown on the ph colour scale. The lower the solvent then the less colour shown. Materials: *Test Tubes (4) *Cork Borer *Beets *Water *1% Acetone *50% Acetone *1% Methanol *50% Methanol Procedure: *Cut 4 uniform cylinders of beet using a cork borer with a 5-mm
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SCD also known as sickle cell disease affects the blood and cardiovascular system. There are six different types of SCD. The following discussion will include cause‚ symptoms‚ diagnosis‚ treatment and prevention. The proper education on this disease will give patients and the public a better knowledge of the common unfamiliarity with SCD. The cardiovascular system consists of the heart‚ arteries‚ capillaries‚ veins‚ and blood. The organs in the cardiovascular system are a vital part of the human
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heat. The heat flowing out of a system into its surroundings is defined as negative; q has a negative value because the system is losing heat. Endothermic reaction: B. Exothermic reaction: Some phase changes include melting‚ solidification‚ evaporation & condensation‚ sublimation and crystallization. Melting or the fusion of ice is endothermic‚ the equation for the fusion of ice is or melting is ∆Hfusion. Solidification goes from a liquid state to a solid
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at http://www.jbr.gr Indexed in: WoS (Web of Science‚ ISI Thomson)‚ SCOPUS‚ CAS (Chemical Abstracts Service) and DOAJ (Directory of Open Access Journals) Mesenchymal cells isolation from Wharton’s jelly‚ in perspective to clinical applications Iro KOLIAKOS 1*‚ Nikos TSAGIAS 2 and Vassilis KARAGIANNIS 2 1 2 Stem Cells Bank‚ National Research Foundation‚ Athens‚ Greece C Gynecology Clinic‚ Hyppokrateion Hospital‚ Medical School‚ Aristotle University of Thessaloniki‚ Greece Received: 16
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A solar cell (also called photovoltaic cell or photoelectric cell) is a solid state electrical device that converts the energy of light directly into electricity by the photovoltaic effect. Assemblies of cells used to make solar modules which are used to capture energy from sunlight‚ are known as solar panels. The energy generated from these solar modules‚ referred to as solar power‚ is an example of solar energy. Photovoltaics is the field of technology and research related to the practical
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* Question 1 1 out of 1 points | | | Which of the following is NOT a domain of life?Answer | | | | | Selected Answer: | Animalia | Correct Answer: | Animalia | | | | | * Question 2 1 out of 1 points | | | Polar molecules share electrons equally.Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | * Question 3 1 out of 1 points | | | Which of the following is NOT a characteristic of life?Answer | | | |
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INTRODUCTION An important aspect of any biotechnological processes is the culture of animal cells in artificial media. These animal cells in culture are used in recombinant DNA technology‚ genetic manipulations and in a variety of industrial processes. Now-a -days it has become possible to use the cell and tissue culture in the areas of research which have a potential for economic value and commercialization. The animal cell cultures are being extensively used in production of vaccines‚ monoclonal antibodies
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