A-Level Biology Coursework and A-Level Biology Practicals / A2 / AS
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  SubcategoryA-Level Chemistry (22 Essays)
A-Level Chemistry Coursework and A-Level Chemistry Practicals and Experiments
  SubcategoryEssays (7 Essays)
  SubcategoryExperiments (1 Essays)
Free a-level biology practicals, experiments, results and write-ups.
  SubcategoryA-Level Physics (24 Essays)
A Level Physics Essays and A-Level Physics Coursework, Practicals and Experiments / A2 / AS

AS, A2 and A-Level: Biology: Page 2 Coursework and Essays
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Global Warming
(Length: 2.6 Pages) Global Warming As the world's expanding population burns large quantities of fossil fuels and simultaneously cuts down large expanses of forests worldwide, the concentrations of CO2 and other greenhouse gases are building up in the atmosphere. "The green house effect is the (imperfect) ana ...

Glucose
(User Rating: 6.50 | Length: 0.4 Pages) Glucose Glucose is a carbohydrate and has the chemical formula C6H12O6 carbon means 'carbon'. Hydrate meaning water, that is hydrogen and oxygen. A plant will therefore need raw materials containing these three elements if it is to make glucose. Carbon and oxygen come from carbon dioxide in ...

HIV Lifecycle
(Length: 1.6 Pages) HIV Lifecycle A HIV particle approaches and attaches to a lymphocyte. (Lymphocytes, which include helper T cells and killer T cells, are small white blood cells that are critical in immune defense and are HIV's principal target.) In order to replicate itself, an HIV particle must get its RNA, w ...

Identification of amino acids by chromatography
(User Rating: 8.00 | Length: 8.1 Pages) Identification of amino acids by chromatography Introduction Chromatography is a common technique used by biochemists in separating and identifying different amino acids and helps to reveal the function of cell organelles. Chromatography is particularly approved for its accuracy in distinguishing b ...

Immune System
(User Rating: 1.00 | Length: 2.3 Pages) Immune System White blood cell Function Lymphocyte. Lymphocytes have an important role in producing antibodies and in cellular immunity. Lymphocytes are produced within bone marrow. If they achieve immune-competence within the bone marrow, they are known as B cells, or if in the thymus ...

Man’s effect on the environment.
(Length: 7.8 Pages) Man's effect on the environment. Man has had many far-reaching effects on the environment over the years. Global warming, pollution and the damage to the ozone layer are a few of the major things that can be heard about in the news. Man has damaged the earth gradually over the years and this da ...

Marijuana
(User Rating: 8.50 | Length: 1.6 Pages) Marijuana Marijuana refers to a mixture of leaves, and stems found on the cannabis sativa plant. It has hallucinogenic and pleasure-giving effects on the user when consumed through either smoking or eating. Tetrahydrocannabinal, better known as THC is the non-narcotic psychoactive ingredient in mar ...

Mendelian Genetics
(User Rating: 6.40 | Length: 4.3 Pages) Mendelian Genetics Gregor Mendel was an Augustinian nineteenth century monk who, due to a series of momentous experiments, is now widely regarded as the forefather of genetics. Mendel studied the inheritance of seven contrasting characteristics of the species Pisum sativum, more commonly known as t ...

Outline the factors that are responsible for vegetation change over time
(User Rating: 8.00 | Length: 5.7 Pages) Outline the factors that are responsible for vegetation change over time Vegetation develops in many different and varied environments with each environment having different effects on the vegetation change over time. This essay will examine these different factors, in different environments. It wi ...

Potato Cores in Salt Solution
(User Rating: 9.33 | Length: 7.7 Pages) Potato Cores in Salt Solution Scenario Plants in the soil have their roots in a dilute solution of mineral ions. When they are suddenly flooded with seawater, concentration of which is 0.3 molar Sodium Chloride, they are observed to wilt and become flaccid. Aim The aim of this experiment is to inve ...

Scrapie
(Length: 15.4 Pages) Scrapie Scrapie is a natrually occurring disease of sheep found in many parts of the world, btu not everwhere. NowKNown for over 200 years, it possibly started in Spain and spread to thewhole of western Europe. The export of strictly bred sheep from Britain in the ninteenth centruy is thought to be ...

Symbiosis
(Length: 4.9 Pages) Symbiosis Symbiosis is the term given to a close relationship between two individuals from different species. Symbiosis basically means 'living together'. There are three types of symbiotic relationships, at one extreme there are relationships where both organisms benefit from the symbiosis ...

Tarantula
(User Rating: 5.50 | Length: 6.0 Pages) Tarantula The Arthropods, a term for invertebrate animals, such as crustaceans, millipedes and centipedes, insects, and arachnids, constitute the largest phylum in the animal kingdom with more than 900,000 known species found in almost all habitats. Out of this number there are over 30,000 recognis ...

The advantages and disadvantages of genetic engineering
(User Rating: 1.00 | Length: 0.6 Pages) The advantages and disadvantages of genetic engineering The advantages and disadvantages of genetic engineering Advantages Disadvantages Easy production of otherwise rare products such as human growth hormone, or insulin. Ability to make products such as Rennet without using animals so it ...

The Causes and Effects of Global Malnutrition
(User Rating: 7.00 | Length: 2.3 Pages) The Causes and Effects of Global Malnutrition In this essay, I would first like to deal with the causes of malnutrition, before later coming on to the effects of malnutrition. These causes can be categorised into six main branches. Firstly, I would like to deal with the social factors involved. The ...

The Effect of Temperature on a Plasma Membrane
(User Rating: 7.12 | Length: 3.8 Pages) The Effect of Temperature on a Plasma Membrane effecyThe Effect Of Temperature On A Plasma Membrane Aim: This experiment aims to determine what effect an increase in the surrounding temperature has on the plasma membrane of a typical plant cell structure. Hypothesis: An increase in temperature will ...

The Hydrological Cycle
(Length: 2.2 Pages) The Hydrological Cycle The hydrological cycle is vital in the world today, if the cycle was not occurring and operating then the world in which we live would not be able to function properly, because the hydrological cycle is the circular movement of the water from clouds to the ground through the ...

The Immune System
(User Rating: 10.00 | Length: 6.6 Pages) The Immune System ` Lymph organs include the bone marrow, lymph nodes, spleen, and thymus. Bone marrow contains tissue that produces lymphocytes. B-lymphocytes (B-cells) mature in the bone marrow. T-lymphocytes (T-cells) mature in the thymus gland. Other blood cells such as monocytes and leukoc ...

The moral and ethical concerns with the use of genetically modified crops
(Length: 4.6 Pages) The moral and ethical concerns with the use of genetically modified crops Background Ethics = "The study of the moral value of human conduct and the rules and principles that govern it"1. Moral values of a certain topic can vary between different people, this often leads to conflict. This ...

Totalitarian Agriculture
(Length: 3.9 Pages) Totalitarian Agriculture The idea of Totalitarian Agriculture is scary. Especially considering the fact that it is the exact type of agriculture that is being used in every civilization except for the remaining tribal peoples of the world. I will try to define Totalitarian Agriculture here: "A ...

Vegetarian Diets
(Length: 5.2 Pages) Vegetarian Diets All the nutrients the body needs can easily be obtained from a vegetarian diet. In fact, research shows a vegetarian diet can be healthier that that of a typical meat eater. Nutrients are usually divided into five classes: carbohydrates, proteins, fats and oils, vitamins and minera ...

What is Cardiovascular Disease
(User Rating: 10.00 | Length: 7.5 Pages) What is Cardiovascular Disease How may it be prevented and to what extent is heart transplant surgery a sensible solution to the problem of Coronary Heart Disease? Cardiovascular Disease, or CVD, is Britains biggest killer, responsible for 40% of premature deaths in Britain. CVD is a comprehensive ...

Woodland Succession in Britain
(User Rating: 3.25 | Length: 5.2 Pages) Woodland Succession in Britain Succession is a long-term change in the composition of communities. Unlike the action of seasons and natural disasters, succession is brought about by the activities of living organisms themselves who inhabit the environment. Over a period of time the environment is m ...

‘Discuss the biological and psychological factors that underlie drug abuse and addiction
(Length: 4.2 Pages) 'Discuss the biological and psychological factors that underlie drug abuse and addiction In order to fully understand this question it is important to define exactly what is meant by the key terms used; the Oxford English Popular English Dictionary (Parragon, Oxford 1995) defines 'abuse' ...


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