Imbalance of Microflora

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Living in, and on, the human body are many "friendly" microbes which share a symbiotic relationship with us. They can live in the intestines, skin and mucous membranes. They can provide a particular function or compete with potential pathogens.

An imbalance of these "friendly" microbes can cause disease. The yeast, Candida albicans, which is always present in low numbers in the mouth, anus and vagina can grow rapidly when the normal balance is disrupted. This disease is called "Thrush" or Candida.

How can this disease result? What causes the imbalance?
What are the symptoms of this disease?

Malaria

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• Gather and process information to trace the historical development of our understanding of the cause and prevention of malaria.

CDC site
RPH site


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• Identify data sources, gather process and analyse information from secondary sources to describe one named infectious disease in terms of its: cause, transmission, host response, major symptoms, treatment, prevention, control

WHO site
Malaria Database
Better Health

Reproductive Technologies

Cloning and Transgenic Species

Use the resources below to:

Describe the method of cloning and use a flow chart to list the main steps

Identify examples of transgenic species.

Describe two ethical issues arising from the development and use of transgenic species.

Cloning

NOVA cloning

Transgenic

Ethical issues