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Essay Samples on Biology

Discuss the phenomenon of harmful algal blooms
It can be extremely dangerous when the water is clear with low concentration of cell in the presence of toxic HABs. Mcro or Macro-algae is termed for seaweeds as well which sometimes out grows and causes serious ecological problems like habitat alteration, idigenous species and...
Pages: 4 (1000 words) , Essay , Social Phenomenon
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Darwin had during the Voyage of the Beagle that led to each of the component parts of his Theory of Evolution (Descent with Modification) that eventually appeared in his book the Origin of Species
For example, abird with a distinct beak shape passes this on to some or all of their offspring. Nt all variation was heritable; sme variation was not passed on from parent to offspring, bt was a result of environmental changes, sch as hair color as...
Pages: 4 (1000 words) , Essay , Natural Selection , Endangered Species
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The Hygiene Hypothesis
Some of the common allergens, i substances that cause allergic attacks, iclude pollen, dst, hy, husehold chemicals, snthetic material, pt fur, sme foods and some food preservatives. Wen these come into contact with the body of the allergic person, hs/ her system activates the white...
Pages: 5 (1250 words) , Essay , Multiple Sclerosis , Immunization
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To answer one of following questions: 1) Critically evaluate the claim that feeding behaviour is controlled by biological factors. OR 2) Critically evaluate the relationship between Parkinson's disease and impulse control disorders
(Hakala, 2009, p 85) If it were damaged, te brain would be incapable to tell the person that he is full because no signal is being transmitted and, tus, h will continue to eat. I an injury affects the lateral hypothalamus, i will result in...
Pages: 6 (1500 words) , Essay , Food Intake , Biological Explanation
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Patient Scenario: Diagnosed with Prostrate Cancer
High blood pressure increases the workload on heart muscle. T compensate for the increasing demand, lft ventricle undergoes remodeling and hypertrophy, wich in turn puts the person at an increased risk of arrhythmias, sdden death and heart failure in the long run. Te vessels are...
Pages: 4 (1000 words) , Essay , Prostate Cancer , HG Wells
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Bacterial plant pathogens in soil
In agriculture, oe of the factors that can be tweaked to improve sustainability of a practice is the soil management. Sil is a vital tool of agriculture, a it houses many factors that affect plant growth such as organic material, wter and soil bacteria. Bcteria...
Pages: 4 (1000 words) , Essay , Sustainable Agriculture , Bacteria
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Wooly nightshade
Addition, i produces a strong kerosene smell whenever the leaves are crushed and has the ability to flower throughout the year, poducing berries during late spring and summer – they are first green and then turn to yellow when ripe (Ramel, 2012). Bcause of its...
Pages: 4 (1000 words) , Essay
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The bio control of buddleia davidii
The adult Cleopus weevil is grey and approximately 4 mm in length. Tese weevils get said to originate from china too. I New Zealand, te weevils got used as a sustainable weed control method adopted from China. Te weevil got chosen as the control agent...
Pages: 4 (1000 words) , Essay , M Butterfly
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Human Biology
Satellite cells are situated in dorsal root ganglia somewhere in either side of the spinal cord and they enclosed cell bodies containing sensory neurons that are found inside the ganglia (Tiidus, 2008, pOrdinary staining technique could not enhance visibility of the collagen fibres of hyaline...
Pages: 6 (1500 words) , Essay , Skeletal System , Cardiovascular System
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DNA fingerprinting
RFLPs are the oldest type of DNA finger prints. Fr this process, asample from any part of the body is collected since all the nucleated cells of the body contain DNA. Ater the sample is collected, DA is extracted from the sample by using restriction...
Pages: 4 (1000 words) , Essay , Paternity , Fingerprinting
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Grant Proposal
According to the Environmental Protection Agency (EPA) of the United States, a air cleaner is designed to remove certain pollutants such as particles, gses and may carry pollutants destruction using technologies such as UV light technology (Environmental Protection Agency 1)Plants that absorb air pollutants may...
Pages: 7 (1750 words) , Essay
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Evolution in Health and Disease
However, wth the case of a variety of pathogens, te ability to morph, cange, ad alter the way in which they react to certain substances and environments means that pathogens that had been able to be treated using a variety of different means can eventually...
Pages: 7 (1750 words) , Essay , Evolution , Immune System
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Clostridium Difficile
Difficile was the major cause of severe CDI cases (McCollum and Rodriguez 2012). Tis strain has resistance to fluoroquinolones and secretes different toxins. dfficile is widely dispersed in the environment and is also part of bowel flora in about 2% normal adults (Wilcox 2003). Tis...
Pages: 8 (2000 words) , Essay
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Topic Collection 1
Those that result from natural conditioning have humans no powers to control them while those resulting from human activity can have control from the humans. Anumber of facts reflect these views and their influence on the way of life. FCT 1: Aino acids band together...
Pages: 4 (1000 words) , Essay , Human Evolution
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Dependent variable is the plant growth while independent variable is the light intensity. Te level of exposure of light to the plant will determine growth rate. Wen the light intensity level that reaches the plant is small, te growth rate is also affected greatly. Rgions...
Pages: 7 (1750 words) , Essay , Scientific Revolution , Scientific Method
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Primary and secondary infection with Mycobacterium tuberculosis
From a different angle of view, teatment for primary infection can hinder the rapid spread of secondary infection because. Serling et al.2156) state that ‘More than 2 billion persons are infected with Mycobacterium tuberculosis, ad from this reservoir active tuberculosis will develop in millions of...
Pages: 4 (1000 words) , Essay , Tuberculosis , New England
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GMO the Necessary Evil
Found in GMO are the cause of malformation chicken embryos and these effects were evident to human birth defects in areas associated with genetically modified soy production. T be precise the researchers found malformation of the head were the new borne had a single eye...
Pages: 6 (1500 words) , Essay , Modified Foods , Good Evil
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Peer-reviewed journal article
The authors actually found that myocardial hypertrophy is dependent on exercise-induced arterial hypertension, cnfirming that there was a hypertensive response in athletes as a result of exercise. Te athletes with exercise-induced arterial hypertension also showed increased left ventricular mass at 205g/m2, epecially in comparison to...
Pages: 4 (1000 words) , Essay , Peer Pressure , Hypertension
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Biology summary of one cephalopod, one bivalve and one chiton of your choosing
Through tight spaces, ae intelligent, fst and can mimic shapes of other creatures when hunting for food and are able to avoid predation due to their speed, aility to camouflage, pesence of venom and expulsion of ink (Campbell & Reece, 2005, pAn example of a...
Pages: 4 (1000 words) , Essay , No One Writes to the Colonel , Coral Reefs
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Homeostasis and transpot
They facilitate the flow of the respiratory gasses. Vnules are smaller than the capillaries. Tey receive blood from the capillaries and transport them to the veins. Vnules transport blood from the capillaries into the veins so that they are returned back to the heart. Vins...
Pages: 8 (2000 words) , Essay , Homeostasis , Cellular Respiration
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