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Health, disease and the development of medicines

Edexcel GCSE Combined ScienceTopic 5 of 1421 lessons

Revision notes for Health, disease and the development of medicines in Edexcel Combined Science (1SC0). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.

  1. Health as complete well-beingMost people think being healthy just means not being ill.
  2. Communicable and non-communicable diseasesA communicable disease can be passed from one person to another, or from one organism to another.
  3. Why one disease raises the risk of othersHaving one disease can make a person more susceptible to other diseases.
  4. PathogensA pathogen is an organism that causes disease.
  5. Common infectionsThe specification asks you to know five infections: what causes each one and the damage it does.
  6. How pathogens spread and how to stop themPathogens spread in different ways, so the best way to reduce the spread depends on the route.
  7. Sexually transmitted infections: chlamydia and HIVA sexually transmitted infection (STI) is passed from one person to another during sexual contact.
  8. Physical barriers and chemical defencesThe body has a first line of defence that tries to stop pathogens getting in.
  9. The specific immune system and antibodiesEvery pathogen has molecules on its surface called antigens.
  10. Immunisation with an inactive pathogenImmunisation protects a person against a disease before they are ever infected.
  11. Antibiotics and bacterial infectionsAntibiotics are medicines that kill bacteria or stop them growing.
  12. Developing new medicinesDeveloping a new medicine, including a new antibiotic, takes many years and has several stages.
  13. Non-communicable diseases and their causesA non-communicable disease is one that cannot be passed from one person to another.
  14. Lifestyle factors and non-communicable diseaseLifestyle factors change the risk of non-communicable diseases.
  15. Treatments for cardiovascular diseaseCardiovascular disease affects the heart and blood vessels, for example when coronary arteries are narrowed by fatty deposits.
  16. Electromagnetic waves are transverse and travel at the same speed in a vacuumAll electromagnetic waves are transverse waves.
  17. Core Practical: Refraction in a rectangular glass blockWhen a ray of light passes from one material into another at an angle, its speed and direction change.
  18. Groupings of the electromagnetic spectrumElectromagnetic waves form a family called the electromagnetic spectrum.
  19. The electromagnetic spectrumElectromagnetic waves form a family called the electromagnetic spectrum.
  20. Harmful effects of electromagnetic radiationThe danger from an electromagnetic wave increases as its frequency increases.
  21. Uses of electromagnetic radiationEach part of the spectrum has uses that depend on how its waves behave.

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