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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spreading‚ blood clot and scar tissue can start to form in front of the retina‚ which prevents light from hitting the retina‚ causing blindness. If the fluid is released it can cause swelling which leads to blurred vision. There is no treatment when this occurs ‚but the prevention of the build up of glucose surrounding the blood vessels in the eye and the
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creating a power stroke. A specific chemical reaction needs to occur in order for the myosin to acquire the sufficient energy to pull the actin filament. A fact from Chemistry gives a greater understanding of the chemical reactions that occur during a power stroke thus giving a greater understanding of the filament interaction from a molecular perspective.
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the surface of the clear liquid as well. * -Coagulation 65. Describe the physical change that occurs during lactose fermentation. Name one microbe capable of producing this reaction. * Lactose Fermentation involves the initial breakdown of lactose to glucose and the subsequent fermentation of glucose to produce an acid end product. 66. Describe the physical change that occurs during an alkaline reaction. Name one microbe that would produce this response. * This change to
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Theoretical background Upper course The source of the river is normally found in an area of high ground. The river usually flows through a steep V-shaped valley. Most of the erosion that occurs in the upper course is vertical and as the river bed is eroded lower the valley becomes steeper. The river is narrow with a shallow channel. As discharge is calculated by measuring the cross sectional area of the channel multiplied by the velocity‚ the discharge is small. The river is mainly slow flowing
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PERSPECTIVE ON AGING Theoretical Perspective on Aging Rachael Porchia HCS/548 September 3‚ 2012 Deborah Ayers Theoretical Perspective on Aging The study of aging has not been around long. Aging is natural‚ and occurs during an individual’s lifetime. Essentially‚ no one can escape the aging process many individuals 60 and over are in good health‚ and hold his or her independence status. However‚ some individuals over 60 experiences medical issues‚ and may need
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Asynctilism vertex malpresentation Fetal head presenting at a different angle than expected 2. Brow presentation Rare Occurs in multiparty Woman with relaxed abdominal muscles Results in obstructed labor CS is necessary Infant can have extreme ecchymotic bruising in the face Reassure parents that child is well after birth. 3. Face presentation Rare Occurs‚ the head diameter the fetus presents to the pelvis is often too large for birth to proceed Head that feels more apparent than
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California in comparison to Terre Haute‚ Indiana. The two cities precipitation differs throughout the twelve month calendar year where many of the heavy precipitation months are totally opposite. Berkeley California’s winters‚ where the majority of rain occurs and Terre Haute‚ Indiana where the rainfall is observed as consistently disseminated throughout the year evenly. This paper will also magnify geographic position‚ climate and elevation in contrast of the two cities that reflects the water budget
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During rest the horses systems are under less stress and do not work as hard as there is less demand. Inhalation occurs as the rib cage expands using the intercostal muscles which causes the diaphragm to contract and flatten meaning the thorax enlarges. Gaseous exchange occurs as oxygen diffuses through the alveoli into the thinly walled capillaries. The oxygenated blood goes into the left atrium and through the bicuspid valve to left ventricle
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is the common browning that occur in cut fruits and vegetables [pic] Phenolase enzymes that have been isolated from food sources are oligomers and contain one copper prosthetic group per subunits. Thus‚ if damage to plant tissue is sufficient and oxygen and copper are present‚ browning occurs. Such operation as cutting‚ peeling and bruising are sufficient to cause enzymatic browning. Phenolase is active at mild Acidic pH (5-7). Enzymatic browning does not occur in intact plant cells since
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