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Read the text carefully and then decide whether the statements are True(T) or False (F)! Photosynthesis Process Step by Step Photosynthesis is a process made by green plants to creating its food. Light, water, chlorophyll and carbon dioxide are the basic requirements for this process. Here is the entire process. Carbon dioxide in the atmosphere enters the plant leaf through the stomata. The stomata are minute epidermal pores in the leaves and stem of the plants which facilitate the transfer of various gases and water vapor through them. This is followed by water entering the leaves, primarily through the roots. The roots are designed to draw in the ground water, and transport it to the leaves through the stem. As sunlight falls on the surface of the leaves, the chlorophyll present in the leaves traps the energy in it. Chlorophyll is a green pigment present in the plant leaf, which helps the plant in absorbing sunlight. The green color of the leaf is also attributed to presence of chlorophyll in it. Then hydrogen and oxygen are produced, as the products of photosynthesis, by converting water using the energy derived from the sun. The hydrogen is combined with carbon dioxide in order to make food for the plant, while oxygen is let out by the plant through the stomata. In the same manner, even the algae and bacteria which indulge in this process, use carbon dioxide and hydrogen to prepare food, while oxygen is let out as a waste product. In short it can be written in chemical formula as follow: 6CO2 + 12H2O + Light → C6H12O6 + 6O2+ 6H2O While we take in oxygen and give out carbon dioxide to produce energy, plants take in carbon dioxide and give out oxygen to create energy. Photosynthesis has several benefits, not just for the photoautotrophs, but for humans and animals as well. It helps in maintaining a normal level of oxygen and carbon dioxide in the atmosphere. Almost all the oxygen present in the atmosphere can be attributed to this process, which also means that respiration and photosynthesis go together. The chemical energy stored in plants is transferred to animal and humans when they consume plant matter. http://www.buzzle.com/articles/process-of-photosynthesis.html Photosynthesis can be done by plants which has chlorophyll. (T/F) The plants take the oxygen and out carbondioxide as the product of photosynthesis. (T/F) Oxygen is the waste product of photosynthesis (T/F) The water is transported to the leaves through the stem which taken it from the soil. (T/F) When the plants do photosynthesis, they don’t do respiration at the same time. (T/F)
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Arrange these jumble letters into meaningful words by studying the desciption (the bold letter will be the initial leter of the word)! Looking for something carefully = E – S – A – H – C – R The falling down particle of cloud in hydrocycle = N – O – P – I – R – T – I – P – E – C – T – I A bleeding condition cause baby lose in womb = A – M – I – C – E – S – R – I – G – R – A A condition when baby born upside down = C – E – R – E – H – B A wild powerfull swirling wind = O – T – O – R – A – N - D
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Create a dialogue using the expression of blaming, admiting, request and promise based on the situation given! Situation: Sandra found that her book was torn and tarnished with a coffee spot after Hassan, her brother returned it back to her. She is blaming her brother about it. Hassan admitted that he spoiled a coffee unintentionally when he read it. And the worse, he tore the book when he tried to clean the coffee spot. Sandra asked Hassan to be careful next time and he promised her sister.
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Complete the following text by changing the words in the brackets in suitable form of active or passive! Glass (can make) from three ingredients: silica, soda ash, and calcium oxide which is known as lime. Silica, soda ash and lime (be) the main ingredients in glass, but many other chemicals (can add) to the mixture to create certain properties. For example, barium is sometimes used to increase glass' brilliance, and boron can be added to increase heat resistance. Chemicals that reduce the melting point of the silica are also frequently used. Sometimes recycled glass, called cullet, is also added. The desired ingredients are mixed and then melted into liquid in large furnaces. Once glass (has melt), it can be shaped and used in various ways. When blowing glass, a ball of melted glass is placed on the end of a hollow iron tube. Air is then (blow)into the tube to shape the glass on the other end. Air can be blown in manually or by machine. The glass (reheat) often during this process so that it stays pliable. When the glass blower is finished with the piece, it is allowed to cool and is then broken free from the blowing tube. In the pressing method of glass making, the liquid glass (pour) into a mold and then pressed into shape by either a machine or a special tool. This is how bowls and ashtrays are made. Glass drawing (use)to make flat and tubular pieces, such as glass for windows and test tubes. To make the glass flat, it (place) into a tank along with melted tin. The glass floats on top of the tin. Because the tin (have) a very smooth surface, the glass (float) on top and (form) sheets. Tube-shaped glass is poured into a spinning mold. Air is blown through the mold as it spins to keep the cooling glass on the outside edge of the tube. Once the glass is finished, it (go) through an annealing or tempering process to increase its strength. The annealing process (involve) making the glass hot again and then allowing it to cool slowly. When glass is tempered it is also reheated, but tempered glass is cooled very quickly with air. Depending on the desired properties, the finished glass (can coat) with different materials to further increase strength, reduce glare or add other desired traits.
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Nilai maksimum Z = 5X + 6Y pada daerah penyelesaian X + Y ≤ 4, 3X + 2Y ≤ 10, X ≥0, Y ≥ 0
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