½Give an account of the structure and properties of Biological membranes. Include details of the modifications of membrane structure found in different specialised cells and organelles½ The Fluid Mosaic model was codified by Singer and Nicolson in 1972. It describes the structure and properties of the cell membrane very simply. Every membrane consists of a Phospholipid bilayer. This is simply two layers of phospholipid molecules that come together due to their unique properties. The heads of the
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Biological Theories and Criminal Behavior Biological theories address deviant behavior as a relationship between biological factors‚ and social norms in respect to crime. The theories address behavior of an individual based upon his or her biological impact. Schmalleger‚ (2008) points out a connection to social environments and the impact upon human behavior. The connection has validity because of human thoughts and activities are constantly flowing through the brain providing an impact relating
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Evaluate the biological treatments of depression. (16 marks) Antidepressants such as monoamine-oxidase inhibitors (MAOIs) and trycyclics (TCAs) are effective in reducing depressive symptoms. Antidepressants have been tested in trials with placebos and have found to be effective in reducing symptoms of severe depression in around 65% to 75% compared with around 33% for placebos – Gitlin 2002. Gitlin carried out a clinical trial testing selective serotonin re-uptake inhibitors (SSRIs) and placebos
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Discuss the nature of sleep ( AO1= 8‚ AO2=16) In this essay I will discuss the nature of sleep‚ in terms of: REM‚ NREM‚ and the physiology of sleep. There are two sorts of sleep: REM and NREM. REM and NREM are as different from each other as each is from wakefulness. NREM sleep is characterised by an idle brain in a very relaxed body; whereas REM sleep is characterised by a brain that appears to be wide awake in a virtually paralysed body. There are 4 stages to NREM sleep: ‘falling’‚ easily woken
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biology‚ my interest in biology as a discipline of beauty and mysteries remains paramount. Throughout high school and college thus far I have taken a rigorous curriculum and maintained a 4.0 grade point average‚ undertaking mostly courses under the Biological Sciences frame. I have particularly excelled in such core courses as Advanced Cell Biology‚ Chemistry for Life Sciences‚Special Subject of Genetics‚ Gene Evolution‚ and Biomedical Sciences‚ all of which are highly relevant to the program I am applying
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Homeostasis is a system that regulates internal environment and tends to maintain a stable and constant condition‚ it is normally found within living organisms. It receives and sends information about the body’s condition to the hypothalamus which can then make changes if necessary. The hypothalamus is a part of a organisms brain that controls its body’s homeostasis system. There is a theory called duel control theory that assumes that the feeling of hunger and satiation are controlled by two
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disorder that affects the persons emotions and distorts how a person perceives the world. The person suffering has confused thoughts and has difficulty telling reality from delusion. It can be described by psychological explanations and biological explanations. A biological explanation of schizophrenia is the dopamine hypothesis‚ amounts of low levels of dopamine in the brain causes a loss of balance and co-ordination‚ it has been found in people with ADHD and Parkinson’s disease. Where as high levels
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There are many ways race can be shown‚ but I have learned that there is no biological definition of race. Most people categorize people through physical appearance and where a person is from. Just because people have a different name or a different way of doing things does not mean they are going to hurt anyone‚ give them a chance because they are human too. There was a situation in Texas where a student made an alarm clock at home and he took it to school to show his teacher what he had done. Race
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The numerous physical symptoms of a panic attack are extremely intense and debilitating. They include but are not limited to: heart palpitations‚ sweating‚ trembling‚ shortness of breath‚ chest pain‚ chocking sensation‚ nausea‚ and dizziness. These symptoms are accompanied by the psychological sensations of fear‚ detachment from ones surroundings and paranoia. These symptoms seem to appear out of nowhere and can occur anywhere‚ which creates extreme anxiety before during and after the attack. It
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The Mind of a Psychopath – Biological Factors Brain & Behavior Famous serial killers like Ed Gein and Ted Bundy have turned what we only believed to be true in movies and books‚ into a reality. Ed Gein‚ an American serial killer and body snatcher‚ took corpses from local graveyards and fashioned trophies and keepsakes from their bones and skin. After police found body parts in his house in 1957‚ Gein confessed to killing two women. Nearly 14 years later‚ Ted Bundy‚ another
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