The Human Being—A Complex Organism Human beings are complex and special organisms as there is a complex organisation of cells in the human body. The organisation in the human body is summarised as follows: Cells—> Tissues—> Organs—> Systems—> Organism. The same type of cells which carry out a specific function are organised into a tissue. For examples‚ a group of muscle cells form a muscle tissue while a group of nerve cells form a nerve tissue. They are organised to work together to perform
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How far was the use of show trials the most important way in which Stalin kept control of Russia? The Show trials were one of the most important ways by which Stalin kept control over Russia‚ however the work of the Secret Police‚ the creation of the cult of Stalin and his use of socialist realism were also significant. The show trials were was very important in Stalin’s control of Russia; by killing all the Bolsheviks that might oppose him he was able to rule freely. The Bolsheviks that were
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system is a nonspecific defense mechanism activated in response to invading organisms. This system gets its name from the fact that it complements the action of antibodies. It is the primary mechanism activated by antibodies to kill foreign cells by forming membrane attack complexes. In addition to directly lysing the invading organisms it also reinforces the general inflammatory tactics. It can be activated in two ways: 1. A nonspecific innate immune response. This is when there is exposure
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Why is water important for living organisms? Water is very important in all living organisms‚ it is vital for many different things. Around 70% of our body weight is due to water. The quantity is high in organs such as lungs and brain and fluids such as blood‚ lymph‚ saliva and secretions by the organs of the digestive system. First of all water is vital in the regulation of body temperature to depending on the temperature mammals will alter the amount they sweat. If they are to warm the amount
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with DNA from different species of living organisms‚ bacteria‚ or viruses to get desired traits such as resistance to disease or tolerance of pesticides. How do scientists Genetically modify organisms? Genetically modifying organisms works just like an advanced form of cut and paste. During genetic modification‚ DNA is taken from and unrelated plant‚ animal or bacteria and inserted into a different organism to get it to produce the desired traits. The DNA is“cut” from one organism and “pasted” into
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described four different ways people cope with their identify. The first way people cope with finding their identity is role confusion. Role confusion is the polar opposite of identity achievement. People who are using role confusion to cope with their identity are unconcerned with future goal‚ and have no motivation to further themselves. In worse cases‚ people going through role confusion have the struggle of not being able to forward thus being indefinitely stuck. The second way people use to cope with
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The effect of mutations on living organisms Mutations occur when there is a change in the base sequence on the DNA strand. Most mutations have absolutely no effect due to them occurring in the introns‚ or the “junk DNA”. However some mutations occur on the exons‚ and these are the ones that can be potentially harmful to the organism‚ although in some exceptional cases random mutations can be beneficial‚ and pressured mutations are almost always beneficial to the survival of a species. Harmful
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infection 2.1 Identify the differences between bacteria‚ viruses‚ fungi and parasites. Bacteria – bacteria are extremely small singular organisms which are found almost everywhere. Viruses – it is a coated genetic material that invades cells and use’s the cells apparatus for reproduction. Fungi – it is a multi-celled living organism Parasites – they are types of living plants and animals that derive benefit from the metabolism of other animals and plants. 2.2 Identify
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A planarian is free-living flatworm that lives in fresh water. Planarians are organisms that live in freshwater. Planarians are part of the metazoan phylum. Animals in the metazoan like jellyfish have the ability to regenerate (Raymond 511-512). Planarians are closely related to animals like jellyfish and starfish. These animals shared the same special ability to regenerate; starfish are able to regenerate their arm when it is cut off. Jellyfish are able to regenerate their stinger when cut off (Li
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The purpose of this experiment was to test several different ways to make sea water drinkable through a variety of desalinization processes. In the experiment‚ there were 44 experimental subjects who were subject to four different test groups: no water‚ sea water‚ sea water processed by the Berka method (Berka method was devised to test whether such liquids given as the only supply of fluid could cause severe physical disturbance or death within six to twelve days)‚ sea water without salt. In order
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