Title: Ms. K Cell Membrane and Homeostasis Experiment Objective(s): The reason for this experiment is to see how starch and iodine affect each other and how a plastic bag works similar to a membrane in certain situations. Introduction: I know prior to doing this experiment that iodine mixed with starch creates a dark color and that most objects‚ organic and inorganic‚ naturally experience isotonic reactions. Hypothesis: I think that the potato will absorb more starch than the sweet potato and
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Abstract The Seeds of Mung bean‚ wheat‚ and silver beet were tested in environments of differing salinities to note down if high salinity environments were worse for the seeds. It was found that generally lower concentrations were better for germination then higher concentrations. Despite this‚ the hypothesis was not completely supported as in wheat and silver beet the second concentration had a higher rate of germination than the control and in all instances the highest concentration had a higher
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The water molecule will flow from higher concentration to lower concentration‚ so that they get out of potato cells through osmosis. The plasma membrane of plant cell will collapse as the water inside the cell become less and less‚ that cause plasmolysis and the cell become flaccid. 2. A salt water fish may die if placed in fresh water. Why? In order to keep an isotonic condition‚ the salt water fish’s cells have the same concentration with salt water. When they are placed in fresh water‚ concentration
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AND BURSTING of animal cells when water enters is called cytolysis. This happens when a cell is placed in a hypotonic solution. The SHRINKING of plant cells when water leaves so the cell membrane pulls away from the cell wall is called plasmolysis. It happens when a plant cell is placed into hypertonic solution. The shrinking of ANIMAL cells that are placed in a HYPERTONIC solution is called crenation. Cells stay the same size when placed in an isotonic solution because the amount
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CBSE TEST PAPER-01 CLASS - IX Science (Cell: The basic unit of life) 1 The energy currency of cell is -: (a) ADP 2 (b) AMP (c) ATP (d) GTP [1] (c) Shrink (d) Show plasmolysis [1] (c) Mitochondria (d) Chloroplast [1] (d) Nerve cell [2] [2] [2] [2] [3] [3] [3] [1] A cell in placed in hypotonic solution will -: (a) Swell up (b) Not undergo any change 3 Which organelle release oxygen? (a) Ribosome (b) Golgi apparatus 4 Which of the following human cells lack nuecleus? (a) WBC (b) RBC (c)
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Diffusion and Osmosis Experiment Methods/Materials: 7.1 Experiment: Rate of Diffusion of Solutes In the initial set up of this experiment I had 2 sets of 3 screw-cap test tubes that had each been half-filled with 5% gelatin and 1-mL of the correct dye (either potassium dichromate‚ aniline blue‚ or Janus green) in each of the test tubes. I labeled the 3 test tubes of set 1 with which die they contained and marked them “5 ˚C”. Then with the other set I did the same exact thing‚ except I labeled
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EXPERIMENT TO SHOW THE EFFECT OF DIFFERENT CONCENTRATION OF GLUCOSE ON POTATO STRIPS INTRODUCTION: Molecules of liquid and gas are constantly in motion‚ they move randomly in all directions and bounce around in all directions and bounce around and into each other. As they move‚ they tend to spread out moving from areas with many molecules to areas with fewer molecules . This process of spreading out is called Diffusion‚ for example smell of cooking travelling around the house from the kitchen
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Question 1 5 out of 5 points Correct All persons act in order that they might get pleasure.Even so-called altruistic persons who help others so much that they do almost nothing for themselves get pleasure out of giving.Otherwise‚ they wouldn’t do it. Suppose a person hits himself over the head with a hammer.He must get pleasure from it‚ because why else would he do it if he didn’t get pleasure from it? Answer Selected Answer: Circular reasoning Correct
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- pH 12. Red beet juice will change from red to yellow between pH of 11 and 12. Therefore they are not as reliable as common laboratory indicators. Some other natural indicators include: Carrots‚ cherries‚ grapes‚ hydrangea‚ onions‚ poppy petals‚ rhubarbs‚ thyme and tulip petals. Aim To investigate the uses of various common and natural indicators in acidic‚ neutral and basic solutions. Part A: COMMON INDICATORS Equipment 0.1 M solutions of sodium hydroxide and hydrochloric acid‚ distilled
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Botany Exercise 1 – Microscopy A. The Compound Microscope microscope – optical instrument consisting of a system of specially ground lenses that gives sharp‚ distinct‚ and highly magnified images of minute objects. compound microscope will be used. o two lenses: eyepiece + objective lenses o inverted image base coarse adjustment knob fine adjustment knob revolving nosepiece objective lenses stage stage clips stage opening condenser iris diaphragm mirror U-shaped platform that supports
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