substances made up of atoms of two or more elements chemically combined together in fixed ratios determined by mass. When a compound is formed from its components‚ a chemical change takes place through chemical reactions. Elements form compounds to become more stable‚ which happens when the maximum number of possible electrons are in the outermost energy level. Carbohydrates: A carbohydrate is one of the elements of the 5 major compounds‚ dealing with the making of an human body. To define the word any
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Which of the following types of molecules are the major structural components of the cell membrane? A) phospholipids and cellulose B) nucleic acids and proteins C) phospholipids and proteins D) proteins and cellulose E) glycoproteins and cholesterol For the following questions‚ match the labeled component of the cell membrane (Figure 7.1) with its description. [pic] Figure 7.1 5) peripheral protein 6) cholesterol 9) glycolipid 11) The presence of cholesterol in
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The physiological needs include the needs we have for oxygen‚ water‚ protein‚ salt‚ sugar‚ calcium‚ and other minerals and vitamins. I need oxygen in order to breathe and live. Just like I need water every day to wash clothes‚ dishes‚ take a shower and drink. Thirst is a stronger need than hunger. You can go weeks without food but only a couple of days without water. They also include the need to maintain a pH balance and temperature of 98.6. Also‚ there are the needs to be active‚ to rest‚ to
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CHEMICAL EFFECTS OF ELECTRIC CURRENT Conductivity of Liquid Electrolysis Electroplating www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond The materials‚ which allow electric current to pass through them‚ are good conductors of electricity. On the other hand‚ materials‚ which do not allow electric current to pass through them easily‚ are poor conductors of electricity. You know that metals such as copper and aluminum conduct electricity whereas materials
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Wharton: The Other Two Edith Wharton was brought up in a rich and privileged family. She lived in a time when the high-class circle feared the drastic social changes that occurred due to post-civil war expansionism and immigration (The Norton Anthology 829). The story‚ The Other Two‚ is Wharton’s way of reflecting on the social changes that American society was undergoing. I plan to focus my response on the psychology of the main character‚ Mr. Waythorn. The story’s main character
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Chapter 2: Neurons and Glia 1. Introduction * Although there are many neurons in the human brain (about 100 billion)‚ glia outnumbers neurons by tenfold. 1:10 ratio. * Neurons are the most important cells for the unique functions of the brain. * Neurons sense changes in the environment‚ communicate these changes to other neurons‚ and command the body’s responses to these situations. * Glia‚ or glial cells‚ are thought to contribute to brain function mainly by insulating‚
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network of specialized cells that carries information to and from all parts of the body. Neuron: the basic cell that makes up the nervous system and that receives and sends messages within that system. Dendrites: branchlike structures that receive messages from other neurons. Soma: the cell body of the neuron responsible for maintaining the life of the cell. Axon: tubelike structure that carries the neural message. Glial cells grey fatty cells that provide support for the neurons to grow on and around
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Stem cells are cells that are capable of generating specialized cells for specific areas of the human body. There are two different categories of stem cells. They are the adult or somatic stem cells and the embryonic stem cells. The embryonic stem cell is spawned when a recently fertilized egg divides‚ which is then capable of becoming any cell in the human body. The embryonic cells are vital because unlike the adult stem cells‚ embryonic cells have the ability to spawn every type of cell that
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The muscles of a person with Parkinson’s become weaker and the individual may assume an unusual posture. Parkinson’s disease belongs to a group of conditions called movement disorders. Movement disorders describe a variety of abnormal body movements that have a neurological basis‚ and include such conditions as cerebral palsy‚ ataxia‚ and Tourette syndrome. A male has a 50% higher risk of developing Parkinson’s disease than a female. In the majority of cases‚ symptoms start to appear after
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Diana Beharry PSY350: Physiological Psychology Alzheimer’s Disease Professor Candice Ward March 20‚ 2011 Introduction In 1901‚ a fifty one year old woman named Frau Auguste D. was admitted to a psychiatric hospital in Frankfurt‚ Germany. She had an unusual bunch of symptoms. While she had no history of prior psychiatric illness‚ her husband had noticed that Frau D. was becoming increasing paranoid‚ hallucinatory‚ agitated‚ disoriented‚ and having increasing difficulties with language functions
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