Experiment title: Preparation of Biological Materials for Microscopic Examination Objectives: 1. To learn how to use a microscope. 2. To study the cell structure of starch grains‚ onion cells and cheek cells. 3. To differentiate the difference between starch grains‚ onion cells and cheek cells. Introduction: Microscope is an optical instrument use to magnify micro objects that hardly or impossible to be observed by naked eyes‚ so that the objects can be studied. Compound light microscope
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The Cell phone use in the world or in society and schools. Cell phone use has caused problems in the entire world. Now is the problem of cell phone use in schools. Caused by the same teacher or parents who forbid this technological object during class. This has been a big problem‚ which is bringing more and more problems in the world and has not talked solutions to solve this problem. I will discuss in this essay on three different points. About Advantages of phone‚ Positives
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Cell Organelles Nucleus Its function is to control the cell’s activities and retain the chromosomes. The nucleus is bound by a double membrane‚ the nuclear envelope. The nuclear envelope has pores in it to allow the transport of mRNA. The cytoplasm like material is called nucleoplasm which contains chromatin (coils of DNA and histone proteins)‚ it is chromatin that condenses to form chromosomes during cell division. Within the nucleus is a small spherical body called the nucleolus which
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Cellulitis: Cellulitis is a common skin infection caused by bacteria. Causes Staphylococcus and streptococcus bacteria are the most common causes of cellulitis. The skin normally has many types of bacteria living on it. When there is a break in the skin‚ however‚ bacteria can enter the body and cause infection and inflammation. The skin tissues in the infected area become red‚ hot‚ irritated‚ and painful. Risk factors for cellulitis include: • Cracks or peeling skin between the
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Plant Cell Plant cells have many different parts that are need to work together and function as a whole. These parts are the cell membrane which can be compared to a "Condom" due to the fact that is a very thin protective layer that lets certain substances to pass through. Cell wall is a thicker rougher membrane‚ which gives the plant most of its structure and support‚ the cell wall also bond with other cell walls to form the structure of the plant. Centrosome may be also referred to as the
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background knowledge relating to the current cell theory‚ the differences between prokaryotes and eukaryotes‚ and the structures and functions found within cells. Once this knowledge is known‚ a person is then able to give their opinion in the debate. In the 1800s‚ the cell theory was developed. This theory states that cells are found in all living things making them the basic units of life and that all cells come from other cells. In order to be classified as a cell‚ the object in question must be able
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What are stem cells and what is gene therapy respectively? These are cells that have the potential to form many different types of cells found in the body. When stem cells divide‚ can form more stem cells or other cells that perform specialized functions. Embryonic stem cells have the potential to form a complete individual‚ while adult stem cells can only form certain types of specialized cells. Stem cells to continue to divide throughout the lifetime of a person. The use of recombinant DNA
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Indian economy at a rate of 8%‚ the demand for metals‚ used for various sectors‚ is also on the higher side. As a result‚ the Indian Aluminium Industry is also growing consistently as in the year 2009 the aluminium industry in India saw a growth of about 9%. | | In the year 1938 the production of Aluminium started in India when the Aluminum Corporation of India’s plant was commissioned. The
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Plant Cell>>Factory A:Nucleus>Main Office The main office of a factory regulates all activities‚ and controls everything that happens inside the factory‚ as does a nucleus in a Plant cell. B:Cell Membrane>Guard The guard of a factory protects the factory from harm‚ and checks trucks‚ that are coming in‚ for anything that could harm the factory‚ as does the cell membrane of a Plant cell. C:Nucleolus>Boss The boss of a factory controls the office and has a high authority in the factory
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being engaged on their cell phones by being socially active on Facebook‚ Twitter‚ Instagram‚ etc. which definitely distracts them from studies. Most teen’s grades have dropped dramatically because of cell phone use. Some students take a great advantage of these devices while others misuse it by visiting inappropriate sites which results in bad academic performance. A cell phone is also a luxury for a student. A few hours a day without a cell phone will not kill anyone. Ringing cell phones can disrupt
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