Effect of ions on living organisms (24 marks) An ion is a charged atom or molecule. This is because it does not have an equal amount of protons and electrons‚ therefore giving the atom an overall charge. An example of an ion is ‚ this is sodium and the plus sign represents an overall positive charge. Ions are very important to living organisms as they are essential for life‚ they play an important role within the cell allowing mechanisms within the living organisms such as respiration‚ to take
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What would you do with a million dollars?The amount of money that will pass through your hands over a working lifetime is incredible. For example‚ if you work 40 years and earn only an average of $25‚000 per year‚ you will have made $1 million even without salary increases due to inflation. The average family in America earns nearly $50‚000 per year. You are likely to earn over $2 million dollars in yourlifetime! What will you do with your millions? Many older people have spent it all. Is that what
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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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Evolution of Eukaryotic Cells from Prokaryotic Cells DNA- Deoxyribonucleic acid (DNA)‚ a self-replicating material present in nearly all living organisms‚ is the acid that carries genetic information. RNA- Ribonucleic acid (RNA)‚ is an acid that is present in all living cells‚ it’s main role is to act as messenger and carry instructions from DNA fro controlling the synthesis of proteins. What are Eukaryotic Cells and Eukaryotic Organisms? A eukaryotic cell is a cell that contains complex
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the state of Maharashtra. With a population of approximately seven million‚ the city has its fair share of problems associated with overpopulation; such as: pollution‚ traffic jams and shortage of real estate to name a few. If I were to change one thing about Pune‚ it would be the excess population of our city. Over the past decade‚ the population of Pune has nearly doubled. This rise in population has resulted in a dramatic increase in pollution. Almost every household in the city now owns a car
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TITLE: Why Banning Cell Phones while Driving Should be Mandatory Nationwide A. To persuade people not to use their phones while driving B. That we should ban phone usage while driving and make it Nationwide C. Cell phones are very common now a day. Everyone have one from young to old. They can be very useful until we get behind the wheel and try to use it the same time you are diving. So banning cell phone usage a nationwide thing should be a good thing. I. The numbers are steady rising of
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[pic] Cells and Their Organelles The cell is the basic unit of life. The following is a glossary of animal cell terms. All cells are surrounded by a cell membrane. The cell membrane is semipermeable‚ allowing some substances to pass into the cell and blocking others. It is composed of a double layer of phospholipids and embedded proteins. Color and label the cell membrane tan. Plant cells have an additional layer surrounding them called the cell wall. The cell wall is made of nonliving
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That girl you called a slut in class today. She’s a virgin !! The "gay boy" you punched in the hall today. Committed suicide a few minutes ago. The boy you called poor. He has to work every night to support his family. That girl you pushed down the other day. She’s already being abused at home. That girl you called fat. … She’s starving herself. The old man you made fun of cause of the ugly scars. He fought for our country. The boy you made fun of for crying. His mother is
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Commercial Cells Galvanic Cell A Galvanic cell is also known as a Voltaic cell. It was named after Luigi Galvani and Alessandro Volta. A galvanic cell is capable of producing an electric current from a redox reaction that occurs within it and consists of two half cells. Each half cell consists of an electrode and electrolyte and a salt bridge. In a galvanic cell one metal can undergo reduction and the other oxidation. A typical galvanic cell is based on the spontaneous redox reaction: Net Ionic
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arrival of the French‚ Washington’s morale was boosted. At Yorktown‚ the Americans and French were able to force Cornwallis to surrender‚ and the war was finally over. Washing successfully accomplished his goal of leading the colonies to victory. This accomplishment of gaining independence not only gave the 13 colonies happiness‚ but mainly Washington as well. As a result of this happiness‚ the colonies were able to unite into the United States of America. One’s response in a situation definitely
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