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Biology Assignment Examples

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Helicobacter Pylori

Helicobacter pylori is a Gram-negative, microaerophilic bacterium found in the stomach. It is linked to the development of duodenal ulcers and chronic active gastritis. Infected persons are increased risk for lymphoma and gastric cancer. At least half the world’s population is infected by the bacterium, making it the most widespread infection in the world. The…

Biology

Like the study of all sciences, biology is an attempt to better understand the world around us. Specifically, biology deals with the living things in the world. Biology is divided into zoology –the study of animal life- and botany – the study of plants. This is a very superficial division because there are many creatures…

Biodiversity, Evolution & Natural Selection Notes

Biodiversity: * Variety of different organisms within a habitat. Two aspects to consider are: * Species richness: the number of different species within an area of known size at a particular time. A species is a group of organisms with so many features in common that they can mate and produce fertile offspring. * Genetic…

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The Effect of Different Sucrose Concentrations on the Growth of Yeast

I will be looking at yeast and seeing if it is effected by different concentrations of sucrose. Yeast is a single celled organism called fungi. It is a very useful and has been used by humans for thousands of years. It is used to ferment drinks such as fruit juices into alcoholic drinks and make…

How the functions of four cell components relate to overall cell function

To answer this question fully I am going to find my research on the internet, class handouts & from the Health and Social care book. The four cell components I have decided to write about are: * Mitochondria * Nucleus * Endoplasmic reticulum * Ribosome’s Mitochondria are among the most conspicuous organelles in the cytoplasm,…

Development of the human embryo

After about two days the egg has divided to having about eight cells. After four days it is in the uterus and has to “land” somewhere and attach itself to the endometrium. The sperm that penetrates the egg controls gender. Every female egg contains one X chromosome. Every sperm either contains one X or one…

Excretion

In mammals, for example, the two major excretory processes are the formation of urine in the kidneys and the formation of carbon dioxide (a human’s most abundant metabolic waste) in the lungs. The waste products are eliminated by urination and respiration respectively. In urination, Hormone control over excretion occurs in the distal tubules of the…

How and Why do Organisms maintain, a Constant Internal Environment

The maintenance of a constant internal environment requires control systems that detect stimuli and make the necessary adjustments to return the environment to normal. They do this is by homeostasis. One example of homeostasis is thermoregulation. Heat can be lost and gained by radiation, conduction and convection. Evaporation also plays an important part in heat…

The effect of bead size on the activity of immobilised Yeast enzymes

Enzymes serve as biological catalysts and as a result increase the number of reactions occurring within in a set period of time. To a similar effect yeast can be used to increase the rate of a reaction. It is possible to immobilise yeast using a solution such as Sodium alginate. This allows several usage’s from…

How do the cells of the nervous system carry out their functions

The neuron is the structural and functional unit of the nervous system. In all, there are over 100 million neurons, and they are responsible for the reception, transmission, and processing of stimuli; the triggering of cell activities; and the release of neurotransmitters. These functions are conducted by electrical changes in the form of nerve impulses,…

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