An animal cell is not visible to the naked eye and is about 10 to 30 micrometers. A micrometer is one one-thousandth of a millimeter. They are so small that it takes a microscope with a magnification of at least 400x to be able to see inside the cell. These cells are what make up the basic units of structure and function in all living things. They carry out our life processes and make it possible for us to function and live. Inside these cells are organelles‚ which are smaller than the cell itself
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|glucose‚ starch and IKI |yellow |purple | | The solution inside the sausage casing containing glucose and starch was transparent (clear) in the beginning of the experiment. After 30 min of incubation time the solution inside sausage casing was still transparent (clear). In IKI test‚ the content of sausage casing has changed color from yellow to dark purple (cuvette SI)‚ in Benedict’s test the solution from the sausage
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An example of a specialised animal cell could be of a nerve cell. The nerve cell contains axons of motor and sensory neurons‚ which are in bundles of fascicles. They are surrounded by connective tissue which is the sheath of perineurium which ensures that the cells do not get damaged. This lso helps do that the function of the cell is carried out correctly (Nerve Anatomy or Structure (Expanded View)‚ 2017). The function of a nerve cell is to emit impulses through electrical signals fromt the brain
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Introduction Osmosis is the movement of water from a region of higher concentration ( hypertonic ) to a region of lower concentration ( hypotonic solution ) through a cell membrane or other semi-permeable membrane until an equilibrium is reached. It is a special case of diffusion called “ passive transport “ which means no energy is required. Diffusion is the movement of a substance by which the molecules move from a region of higher concentration to a region of lower concentration. Aim
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11/25/12 Regents Biology 3BCD Osmosis and Plasmolysis Problem: What is the effect of Osmosis on a chicken egg? What is the effect of different solutions with various concentrations on plant cells? Hypothesis: 1. In an animal cell in a hypertonic solution the egg will swell‚ in a hypotonic solution the egg will swell. 2. In a plant cell in a hypertonic solution it will shrink‚ and in a hypotonic solution it will swell. Methodology:
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Introduction Many might think that an egg is made up of cells‚ when in actuality and egg itself is a cell. An egg has several main parts‚ including the egg shell (that acts as the cell membrane)‚ the egg yolk and the egg white. There’s also a tiny white mass that is very important‚ it’s called the ovum‚ and it is the living part of the cell. If a hen lays an egg without mating with a cock then the ovum will not develop. If the hen does mate‚ then the egg will be fertile and it develops into a
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AT1- Osmosis In Potatoes Aim: Investigate the movement of osmosis through a selectively permeable membrane‚ in this case potato. Introduction: Osmosis is the movement of water through a semi permeable membrane‚ separating solutions of different concentrations. The water passes from a region of high concentration to a region of low concentration‚ until the two concentrations are equal in concentrations of water. Many cell membranes behave as semi permeable membranes‚ and osmosis is
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The word ‘Hypothesis is derived from a Greek word‚ which means ‘to suppose’. It is usually considered as the principal instrument in research. For a researcher it is a formal question that he or she intends to resolve. In this way a hypothesis may be defined as a proposition or a supposition. The main function of hypothesis is to guide the collection and processing of materials and direct the research. Hypothesis is a tentative conclusion. It is facts based theory. A research scholar will analyze
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Title: Creating the chemical reaction of Osmosis with an Egg. Purpose: We are taking a large single cell (the egg) and demonstrating Osmosis. Osmosis is a type of diffusion where the water molecules is the solution that is being moved. Osmosis is the movement of water through a semi-permeable membrane. Diffusion is the movement of molecules from an area of high concentration to an area of lower concentration. Introduction: When trying to create an osmosis reaction‚ it is important to understand
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step 2: The hypothesis Answer the following questions: * What is a hypothesis? * How is a hypothesis different from a theory in science? * Describe an example of how you may use the scientific method in your daily life and state a good hypothesis for that example. * Which hypothesis did you first pick in the "Recognizing a good hypothesis" activity in the scientific method tutorial? Why? If any‚ which mistake(s) did you make when picking a hypothesis? A hypothesis is a specific
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