Biology Major substances: Organic compounds – are compounds that contain carbon and were originally made by living things e.g. carbohydrates‚ lipids‚ proteins‚ nucleic acids Inorganic compounds – are compounds do not contain carbon as a main element Organic compounds | Composition | Function | Proteins | Carbon‚ hydrogen‚ oxygen and nitrogen | Used in the structure‚ storage‚ movement and transport of cells for growth and repair. | Lipids | Carbon‚ hydrogen and oxygen | Stores energy
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Effect of Osmosis on Potato Aim: To investigate the effect osmosis has on potato pieces that are placed in different concentrations of sugar solutions in water. Hypothesis: I believe that the more saturated the solution is the lighter the potato will be‚ and the potato in the clear water will weigh more after being left in the solution over a 24 hour period. This is because the cell membranes in the potato act as semi permeable membranes (meaning that they only allow certain molecules through)
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control group nothing. 3.Then they presented the same problem solving experiment to both groups and gave them 10 minutes to solve it. They gave them a cork board standing up‚ a candle‚ and a box of matches full of tax and matches. Then told them they had to fixate the candle to the cork board so that when they lit the Candlenut of the Waxwood touch the cork board or fall to the ground. 4.When the 10 minutes were up they found out more of the experimental group (happier group) finish faster than the
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is made of fine cord‚ dark in colour and of an even thickness‚ with a mesh. Posts The posts are used to hold the net in place. Racket The instrument used by players to hit the shuttlecock. Shuttlecock A piece of cork covered in goat skin with 16 goose feathers attached to one end. It can be made from natural or synthetic materials. A shuttlecock weighs around 4.75 to 5.50 grams (0.168 to 0.194 oz). It has 16 feathers with
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Parts of Woody Stems 1. Protective layers In a young plant‚ the protective covering is the epidermis but then as the plant matures‚ the epidermis is sloughed off and will be replaced by the cells that originate from the cork cambium or phellogen. This produces a layer of cork cells which are suberized‚ thus almost impermeable to air or water. But‚ there are small areas in which the cells are loose and spongy that allow a small amount of gaseous interchange. These areas are called lenticels.
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Anatomy of Flowering Plants Tissues A tissue is a group of cells having a common origin and usually performing a common function. Based on cell’s capability to divide‚ tissues are classified into two main groups which are as follows: 1. Meristematic and 2. Permanent tissues. Meristematic Tissues: Cells in the meristematic tissue are capable of dividing. Meristematic tissues are found in those regions which need to grow continuously. For example‚ root tips and stem tips contain meristematic
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“The Devil and Tom Walker” and “Rip Van Winkle” by Washington Irving are two very similar yet different stories. Both of these stories talk about the American Dream and how one can want it but be disappointed when one gets it. Tom and Rip both have wives that are turning points in the stories. They both nag so much that it drives them to crazy things. The imagery in these stories gives a real feel for the scenery and how it interacts with the stories. Van Winkle and Tom both get what they wanted
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ABSTRACT/ SUMMARY After preliminary heating‚ the sample is cooled at a specified rate and examined at intervals of 1°C for flow characteristics. The lowest temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION In the cloud point experiment‚ waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine
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Joint Stock Company Company A company is an artificial person created by law‚ having a separate legal entity‚ with a perpetual succession and a common seal. It is an association of individuals for the purpose of earning profit. It has a capital divided into a number of shares‚ of which each member possesses one or more shares and which are transferable by its owners. Joint Stock Company has been defined by many eminent authors‚ jurists and institutions. Some of these definitions are
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the mass they found by the volume they found. With the newly calculated densities one must compare their calculated densities to the known densities on the data table and record the results. IV. Data- Substances Mass Volume Calculated Density Cork .15g .3mL .5g/mL Marble 3.85g 1mL 3.85g/mL Gold rod 8.6g 1mL 8.6g/mL Copper rod 9.05g 1mL 9.05g/mL White rod 1.15g 1mL 1.15g/mL Matte gray rod 1.5g 1mL 1.5g/mL Matte silver
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