experiment. My Hypothesis for this experiment was to found out the amount of pigment loss of beetroot when exposed to varying temperatures. Betalain pigment found in beetroot My method for this experiment is:- * Use a cork borer to cut about 3 cores of fresh beetroot approximately 8mm in length. * Place them with the help of a forcep on a tile and trim so that it is about 1mm in length. While doing this make sure that no pigment is lost from the beetroot. To trim the beetroot cores in equal pieces I
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different organic solvents‚ such as alcohol and paraffin oil‚ on the cell membrane of the beetroot by using the red pigments in the beetroot as indicator. Hypothesis: Organic solvents dissolve the organic matter in the cell membrane (such as phospholipids). This destroys the cell membrane‚ and the permeability of the cell membrane is disrupted casing red pigments to leak out by diffusion. Biological principle: The cell membrane is mainly made up of phospholipids and proteins. The phospholipid
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(24) Sec 313 Introduction The aim of this experiment is to explore the factors which affect the movement of materials in and out of the cells. The dark red or purple colour of Beetroots is caused by a pigment called betalain that is found within the vacuole of the beetroot cells. The pigment remains intact within the cell if the cells are not “stressed” by the external environment. In this exploration‚ two factors that affect the movement of the betalain out of the beetroot cells will be explored
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vulgaris. • Beta vulgaris contains a beta cyanin which is a water-soluble red-pigment‚ which remains in a healthy vacuole surrounded by the tonoplast membrane. When we damage the tonoplast membrane and thus disrupt the vacuole‚ this red pigment spilled out into the solution and the solution turns red with a higher intensity of color proportionate to a higher amount of damage to the membrane. • Due to the three laws of diffusion across the
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will become hypotonic and swell up as the time increased. “Diffusion is a passive process in which the random mixing of particles in a solution occurs because of the particle ’s kinetic energy “(Allen C. 2006)‚ and is subjected to detect the presence of each of the substances given in the biochemical testing‚ the increase in temperature‚ and different reagent used are some aspect that could cause the difference of diffusion in certain solution. It was clear that the protocols Glucose‚ Albumin
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Name: Lawrence D. Mandras Date: August 17‚ 2013 Rating:_____ Yr. & Course: BSED-IV Laboratory Experiment no. 2 The Living Plant Cell Objectives: * To study the different types of plant cells. * To observe plant cells as to their shapes‚ structures and function. Materials: Microscope cover slip glass slide water onion Iodine soln. hydrilla salt tomato razor blade Medicinal dropper epidermal tissue of rhoeo-discolor
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The effect of temperature on the cell membranes of beetroot cells and amount of pigment released. Apparatus • Corer size 4 • White tile • A Beetroot • Automatic Water Bath • Segregated knife • A thermometer • Stopwatch Method: • First take the white tile and the corer. Then collect a cylinder of beetroot by pushing the corer into the beetroot and withdrawing it. The cylinder remains inside the corer- so push it out with the end of a pencil. • Collect 3 cylinders
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can be coloured‚ especially pigments. This can also be used in secondary or primary colours in ink experiments. Principle behind paper chromatography- Paper chromatography operate base on difference of compound diffusion in medium. Paper chromatography consist of paper as stationary phase‚ the carrier which could be water or alcohol. The carrier carry the compound through paper and since different compound do interact differently with the paper and had different diffusion in the liquid carrier medium
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Chapter 5 The Working Cell Energy • Capacity to do work • Types of energy – – – – Kinetic energy – energy of motion Potential energy – stored energy Thermal energy - heat Chemical energy - potential energy of molecules • Thermodynamics – Study of energy Oxidation-Reduction Reactions • When an atom or molecule loses an electron‚ it is said to be oxidized – process called oxidation • When an atom or molecule gains an electron‚ it is said to be reduced – process called reduction
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4. Which cell organelles resemble following? 1. Kitchen of plant 2. Storage organ 3. Brain Q 5. A boiled egg was deshelled and then kept in water. What will happen? Q 6. How lysosomes resemble immune system? Q 7. How osmosis is a special case of diffusion? Q 8. Can a cell without nucleus (its nucleus is removed) work properly? (3 marks) (2 marks) (2 marks) (3 marks) (2 marks) Q 9. Does photosynthesis takes place in animal cells? Why plastids are necessary for photosynthesis? (2 marks) Q 10.
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