Essays on Biology

Introduction The World Heath Organisation (2011) estimates that without intervention 84 million people will die from cancer between 2005 and 2015. In 2008 156,723 people died in the UK alone of malignant neoplasm and 1 in 3 people will be diagnosed with the disease in …

Down syndrome and Spina Bifida – cause, effects and treatmentMany individuals are born with defects due to genetic factors. Some such defects occur because the child inherits a defective gene, or genes from the parents. Others are caused through mutations- spontaneous changes that occur to …

Note: This section also includes the integumentary system 1. Which gives the correct sequence of increasing organizational complexity? a) organ, tissue, cell, organ system, organism b) cell, organ, organ system, tissue, organism c) cell, tissue, organ, organ system, organism d) organism, tissue, cell, organ system, …

On 10th September 1984, geneticist Alec Jeffrey’s wrote these three words in his red desk diary. This marked the completion of an experiment, which studied how inherited illnesses pass through families. The experiment failed entirely. (McKie, 2009) However, this led to the most profound discovery: …

Irritable bowel syndrome (IBS) is a common gastrointestinal disorder in which the individual experiences episodes of symptoms arising from the large intestines, without the presence of any definite disorder. It is characterized by the presence of a number of symptoms such as abdominal pain, bloating, …

Ye Tao BISC220-13155 The Effect of Temperature on the Digestion of Starch by Activity of Enzyme ? -Amylase: Observation of Rate of Starch Disappearance through Iodine Test Introduction An enzyme is a type of protein that, through its own structure including hydrogen bonds, acts like …

Many atheists argue that religious believers have blind faith ,but does it not take blind faith to believe that DNA and cells were created by chance. The DNA is too complicated to have just been created by chance. Think of the dictionary, if I told …

Sepsis is defined by the clinical marks and symptoms of a systemic immune response to infection. ( 1-2 ) Presently, sepsis on a world-wide degree creates a important degree of mortality ; and consequences in about one tierce of all Intensive Care admittances. ( 3-5 …

In order to understand the activity of enzymes at different temperatures the ability of the enzyme to function can be measured. This is important in many applications such as Polymerase Chain Reaction for forensics as well as genetics research where manipulation of temperature-dependent enzymes allows …

Is it ethical to feed live food to exotic pets? Abstract Live food items are often fed to exotic pet species whether they be birds, amphibians, reptiles or mammals. This raises issues of welfare, both of the animals fed live prey Items and the prey …

There is no denying that both nature and nurture both play a part in who a person is. When it comes to genes and environment one of the two has a greater influence on a person. One’s nurture or environment has the most influence on …

Introduction Organic pollutants are chemicals that are hazardous to human health. Most of them are extremely toxic at very low concentrations, persistent, can be transported over long range as air pollutants, bio-accumulate in human and animal tissue, and biomagnify in food chain. Phenol and its …

The great white shark, Carcharodon carcharias, also known as the great white, white pointer, white shark, or white death, is a species of large lamniform shark which can be found in the coastal surface waters of all the major oceans. The great white shark is …

Multiple sclerosis (MS) is a disease which affects the nervous system, namely the brain and spinal cord. It causes damage the myelin sheath, the material that surrounds and protects nerve cells (Marieb, 2012). This damage slows down the process in which the brain relays messages …

Introduction Plants are essential for humans and all living organisms. They are the producers in ecosystem which can turn sunlight into usable energy and provide consumers with energy, food and oxygen. Chemical reactions are running on earth all the time. Photosynthesis is probably the most …

Introduction Helicobacter pylori are a species of epsilon proteobacteria which colonizes the harsh environment of the human stomach. Its name refers to both its spiral shape (Helicobacter) and the area of the lower stomach which it habitually colonizes: the gateway (pylorus) between the stomach and …

There are many abiotic (physical) factors which affect the distribution of plants and animal in their habitats. Light is a major abiotic factor, as it is the source of energy for photosynthesis, which in turn means it influences all producers and consumers (directly or not). …

Mitochondrial Diseases are very diverse. Specialized organelles in every cell of the body (only red blood cells lack mitochondria). Mitochondria generate more than 90% of the energy required by the body. Mitochondrial dysfunction depletes cells of energy causing cell damage and even cell death. Due …

Enterococcus By Richard Guilford Enterococcus Enterococcus, or more appropriately enterococci, are a family of bacteria in the division firmicutes (meaning strong skin and referring to the cell wall) and the class bacilli (which refers to its rod like shape). They look just like streptococcus bacteria …

The total phenolic contents and total flavonoid contents have also been determined. The results of the present study show that the aqueous extract of TBB possesses antioxidant activity through the DPPH free radical scavenging activity. The preliminary phytochemical investigation indicates the presence of flavonoids and …

Enzyme lab experiments Problem How can we demonstrate how enzymes work? What happens if we alter the environment of an enzyme? Materials Glucose Test Strips Test Tubes Pipettes Raw Hamburg Lettuce Potato Raw Liver Chalk Beakers Dairy Lactose Tablet Water Sugar Solo Cups Hot Plate …

B. Assuming that Joseph’s heart stopped, all of the cellular processes and membrane functions are going to be affected. The loss of oxygen is going to affect everything, ultimately killing off all of the cells. Loss of oxygen and glucose will affect the mitochondria, making …

Introduction Human body consists of different systems among them nervous system is one, it is composed of two parts they are- The Central nervous system: It is composed of brain and spinal cord; it transmits sensory information to the Central Nervous System from sense organ. …

Introduction The deoxyribonucleic acid (DNA) its an organic compound whose molecules contain genetic instructions, its role is to store necessary information to create ribonucleic acid (RNA) and proteins. The DNA segment that encloses this information is called a gene. The DNA molecular structure was discovered …

1.0 Introduction: Tissue engineering can be used to resolve the issues of replacing organs and tissue. Chemical polymers are used as “scaffolds” to support the growth of cells. Yet a “complex of three-dimensional structures and full organs” can be produced by taking different approach (Gilbert …

Introduction 1. Background Drug discovery and design is fuelled by the need for appropriate and effective treatment for disease. Initially discovery was achieved via empirical screening of vast libraries of molecules, which was incredibly effective. The majority of drugs currently in clinical use were discovered …

Introduction Imagine yourself at the peak of adulthood, running, swimming, enjoying all aspects of life to the fullest, and being diagnosed with a fatal disease. Like a bird that soars the skies and gets shot down, that is the feeling that a person diagnosed with …

1.0. Introduction Head and Neck cancer is increasingly becoming a very serious public health issue in the world, correlated with high incidence and mortality rates mainly in developing countries(Jeffries and Foulkes 2001). Deformities caused by the malignancy such as facial and neck injuries profoundly affect …

Introduction Cystic fibrosis is a genetic disorder currently affecting over 9000 people living in the United Kingdom alone, with millions of people carrying the faulty recessive gene responsible for the disease. This essay is split into 4 distinct sections, firstly looking at the faulty gene …

Garlic pesticides have the unique property of repelling and preventing the insects from feeding especially the sucking pests. The pesticide is compatible with chemical insecticides and fertilizers. The garlic pesticide not harmful to natural enemies, pollinators and other beneficial, are cheaper and compatible with other …