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    7-2 Cell Theory

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    7-1‚ 7-2 Cell Structures and Function cell theory- all living things are composed of cellscells are the basic units of structure and function in living things‚ new cells are produced from existing cells. prokaryote- smaller and simpler than eukaryotes‚ do not contain nuclei‚ are part of the Bacteria domain‚ are unicellular‚ are autotrophs or heterotrophs eukaryote- cells with nuclei and contain specialized structures called organells. All plants‚ animals and fungi are eukaryotes. Part of the

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    Stem cells are an undifferentiated cell of a multicellular organism that is capable of giving rise to indefinitely more cells of the same type‚ and from which certain other kinds of cell arise by differentiation. The body is not able to produce new neurons to repair spinal cords injuries‚ such as those that cause paralysis. Because of this‚ there is no way for doctors to restore movement to paralyzed people. Stem cells may be the perfect solution to that problem. Researchers have found that implants

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    Cell phones and driving

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    Dangers of Cell Phones While Driving In today’s society most of us have become very attached to our cell phones. They have become a very large part of our lives because they simplify communication‚ and they help us with everyday tasks. However‚ when used while driving in a car‚ cell phones can become very dangerous or even deadly by distracting drivers from the road. Using a cell phone while driving can include talking‚ texting‚ or navigating through a smartphone app. In fact‚ using your cellphone

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    Cell Phone Distracting

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    Most school administrations regard cell phone use as disruptive and distracting‚ and have implemented policies that prohibits using them on school grounds. Cell phones are a disruption in school. Text messaging can be used to cheat on tests. Students who are text messaging are not able to give full attention to the lesson. If a student cell phone rings in class‚ it totally disrupts the class for a considerable period of time. Many cell phones are also camera phones. Camera phones present an invasion

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    Cell Magnification Fig. 1.2.1 below shows an animal cell [pic] _________ 5(m Fig. 1.2.1 Diagram showing the general structure Of an animal cell as seen under the electron microscope 1. Calculate the magnification factor 2. Calculate the length of structure G 3. Calculate the diameter of the nucleolus 4. Calculate the diameter of the nucleus 5. Calculate the diameter of

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    History of the Cell Theory Ryan Strehlein Cells‚ the make-up of all living things. Some cell are complete organisms‚ such as unicellular bacteria and protozoa. Other types of cells are called multicellular‚ such as nerve cells and muscle cells. Withen the cell is genetic material‚ Deoxyribonucleic Acid (DNA) containing coded instructions for the behavior and reproduction of the cell. The cell was first discovered by the 1665 English scientist Robert Hooke‚ who studied the dead cells of cork with

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    Sickle Cell Anemia

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    Sickle Cell Anemia‚ also known as Sickle Cell Disease‚ is a disease that causes the production of abnormal hemoglobin. The red blood cells (RBCs) carry oxygen to organs and tissues. Hemoglobin‚ a molecule in the RBCs‚ is a protein that attaches to the oxygen in the lungs and carries it to all parts of the body. Hemoglobin takes on the oxygen‚ and releases carbon dioxide‚ a process known as oxygenation. In the tissues‚ deoxygenation occurs where the processes is reversed‚ when hemoglobin releases

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    Fuel Cell Cars

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    FUEL CELL CARS Fuel Cell cars are a major part of the fleet of Zero-Emission Vehicles. The fuel cells are fueled with pure hydrogen and hence they are considered to be zero emission vehicles. Fuel cells have been used on spacecraft for many years to power electric equipment. These are fueled with liquid hydrogen from the spacecraft ’s rocket fuel tanks. Basic Mechanics Fuel cell vehicles turn hydrogen fuel and oxygen into electricity. The electricity then powers an electric motor‚ just like

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    The idea of a cell phone has been around since the nineteenth century. A cell phone is also referred to as a mobile phone‚ or a cellular device. The first cellular device was invented in 1973 by Martin Cooper. This mobile telephone was the size of a brick! Ever since this invention‚ the cell phone has become the most prevalent piece of technology. Nowadays‚ the majority of people in the world possess a cell phone. One country in particular that is very popular when it comes to cell phones is the

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    Lab Report Comparing Animal and Plant Cells The cell is the fundamental structural unit of all living organisms. Cells help carry out the functions of life and together support the organism to function as a whole. Cells are divided into two main categories of eukaryotes and prokaryotes. Animal cells and plant cells fall into the division of eukaryote cells that have both a nucleus and organelles. In this lab‚ animal and plant cells will be compared through a microscope to identify differences

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