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  • Biology Factsheet: 178. Infectious Diseases

    Biology Factsheet: 178. Infectious Diseases

    In 1900 life expectancy was 40-45 years, by 2000 the average life  expectancy was around 75 years. Advances in the prevention and  cure of infectious diseases largely achieved this improve...

    Price £3.00more info
  • Biology Factsheet: 179. Answering Exam Questions: Mutation

    Biology Factsheet: 179. Answering Exam Questions: Mutation

    This Factsheet summarises where students commonly go wrong in  answering questions about mutation. Candidates frequently confuse  gene mutation with chromosome mutation.  • Gene...

    Price £3.00more info
  • Biology Factsheet: 180. Antibiotic Use And The Rise Of Clostridium Difficile

    Biology Factsheet: 180. Antibiotic Use And The Rise Of Clostridium Difficile

    This Factsheet describes the Biology of Clostridium difficile and  the problems that it is causing in hospitals around the world. ...

    Price £3.00more info
  • Biology Factsheet: 181. Why Are Viruses So Successful?

    Biology Factsheet: 181. Why Are Viruses So Successful?

    Rabies, smallpox, poliomyelitis, hepatitis, influenza, the common cold, measles, mumps, chickenpox, herpes, rubella and the acquired  immunodeficiency syndrome (AIDS) are all caused by viruses. ...

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  • Biology Factsheet: 182. Disrupting Food Chains and Webs

    Biology Factsheet: 182. Disrupting Food Chains and Webs

    A food chain is a linear sequence of organisms, each of which feeds  on the preceding organism. A food web is a series of interconnected  food chains. ...

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  • Biology Factsheet: 183. Variations from expected Mendelian Monohybrid Ratios

    Biology Factsheet: 183. Variations from expected Mendelian Monohybrid Ratios

    Gregor Mendel demonstrated 3 key phenotypic ratios when he  carried out a series of experiments investigating monohybrid  crosses in garden peas. All Biologists need to know these ratios&n...

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  • Biology Factsheet: 184. Investigating Sand Dunes

    Biology Factsheet: 184. Investigating Sand Dunes

    Sand dunes are important habitats. In the exam, questions on sand dunes may test your understanding of succession, zonation, conservation  management strategies or ecological sampling. You may d...

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  • Biology Factsheet: 185. Should We Use Human  Animal Embryos?

    Biology Factsheet: 185. Should We Use Human Animal Embryos?

    This Factsheet:explains:  • What embryonic stem cells are  • What scientists want to use embryonic stem cells for  • The arguments that have been made for and against ...

    Price £3.00more info
  • Biology Factsheet: 186. Adaptations to Extreme Conditions

    Biology Factsheet: 186. Adaptations to Extreme Conditions

    This topic covers a lot of fascinating Biology. But, just in terms of  the exam, there are two good reasons for studying this Factsheet:  1. It is a typical synoptic essay title, asking yo...

    Price £3.00more info
  • Biology Factsheet: 187. Selective Breeding of Cattle

    Biology Factsheet: 187. Selective Breeding of Cattle

    This Factsheet summarises the principles of selective breeding,  progeny testing and Inbreeding. ...

    Price £3.00more info
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