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Health and Sickness Summary
2 of 35© Boardworks Ltd 2008 Different types of microbes There are three types of microbes: bacteriavirusesfungi
3 of 35© Boardworks Ltd 2008 Looking at microbes
4 of 35© Boardworks Ltd 2008 Microbes can cause disease The diseases caused by microbes, and their severity, depend on the type of microbe: bacteria food poisoning sore throats tuberculosis (TB) tetanus cholera typhoid bacterial meningitis influenza (flu) mumps chickenpox smallpox polio HIV / AIDS virus viral meningitis fungal sinusitis athlete’s foot fungi onychomycosis (causes discoloured toe nails)
5 of 35© Boardworks Ltd 2008 How do microbes enter the body? eyes nose genitals skin ears mouth cuts Microbes can enter the body in many different places: How do the diseases caused by microbes spread?
6 of 35© Boardworks Ltd 2008 How does disease spread?
7 of 35© Boardworks Ltd 2008 The body’s defences
8 of 35© Boardworks Ltd 2008 Preventing the spread of disease There are several methods that can help reduce the spread of disease: disinfecting surfaces disinfecting skin using antiseptics sterilizing equipment using food preservatives in food personal hygiene. The spread of disease can also be reduced by vaccinating the population and using antibiotics.
9 of 35© Boardworks Ltd 2008 Why do we need to have vaccinations?
10 of 41© Boardworks Ltd 2008 A balanced diet Diet is the usual food and drink that each person consumes and is a very important part of health. A balanced diet means eating the right types of food in the right amounts so that the body gets the nutrients it needs. What are the seven nutrients needed in a balanced diet? Which foods contain these nutrients, and why are they important? carbohydrates proteins fats vitamins minerals water fibre
11 of 41© Boardworks Ltd 2008 Getting the amounts right
12 of 41© Boardworks Ltd 2008 Deficiency diseases
13 of 41© Boardworks Ltd 2008 Organs of the digestive system
14 of 41© Boardworks Ltd 2008 Different types of digestive enzymes Digestive enzymes are the chemicals that break large insoluble food molecules into smaller soluble molecules. Digestive enzymes are classified by the type of food that they affect; there are three main types: carbohydrase – breaks carbohydrate into smaller sugars protease – breaks protein into amino acids lipase – breaks fat into fatty acids and glycerol.
15 of 41© Boardworks Ltd 2008 How do enzymes work?
16 of 41© Boardworks Ltd 2008 Fitness factors
© Boardworks Ltd 200817 of 30 What is a drug? A drug is any substance that changes the way the body or mind works. How many different types of drug can you name? Paracetamol, alcohol, nicotine, cannabis and ecstasy are all examples of substances that can be called drugs. Some drugs are beneficial, like asthma drugs, but others like alcohol and nicotine in cigarettes can cause harm. Drugs can be categorized into over-the-counter drugs, prescription drugs, recreational drugs and illegal drugs.
© Boardworks Ltd 200818 of 30 How do drugs affect the body?
© Boardworks Ltd 200819 of 30 What’s in a cigarette?
© Boardworks Ltd 200820 of 30 The effects of alcohol
Communicable Diseases and You. What is a Disease? A disease is a condition or illness that affects the proper and usual functioning of the body or mind.
Infectious Diseases. What Does Infectious Mean? Infectious or Communicable Disease Spread from one living thing to another or through the environment.
1.1 Pathogens. Starter What is health? A state of complete physical, mental and social well- being. What is disease? A description of symptoms which suggest.
Communicable/Infectious Diseases What are they and how are they spread?
KS3 Biology 8C Microbes and Disease.
Boardworks KS3 Science 2008 Diet and Fitness
Viruses Bacteria and Your Health Ch I. How Infectious Diseases Spread A. Infectious diseases are illnesses that pass from one person to another.
Boardworks KS3 Science 2008 Microbes and Disease
Digestion summary. What goes where? How does chemical digestion happen ?
HOW DO INFECTIOUS DISEASES SPREAD FROM PERSON TO PERSON? Viruses, Bacteria, and Your Health.
Chapter 13- Infectious Diseases
KS3 Biology 9B Fit and Healthy.
Microbes and Diseases Microbes or micro-organisms can only be seen using a m . They can infect our bodies and cause d.
Teacher’s Notes A slide contains teacher’s notes wherever this icon is displayed - To access these notes go to ‘Notes Page View’ (PowerPoint 97) or ‘Normal.
© Boardworks Ltd 2003 Taken from: Porter, S. (2003). Microbes and disease.
Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi; the diseases can be spread, directly or indirectly,
Common Infectious Diseases
KS3 Biology 8A Food and Digestion.
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