biology communicable diseases

• • microbes can enter through nostrills , nose ,mouth ,anus, penis, vagina, cuts and through the skin
• saliva is alkaliva
• vaccination is a small quantinty of small dead or inactive pathogens which help in stimulating the immune system
• grease gland produces sebum which as a barrier
• tiny hairs which in the trachea produce mucus and traps dust a microbes
• ciliated cells are found in the trachea
• stomach has hydrochloric acid and pH of 2
• pathogens are microorganisms that cause infection
• measles is a communicable disease
• flactuate is a graph going up and down
• HIV is sexually transmitted disease
• HIV is transferred through blood transfusion, sharing of sharp objects , breast feeding
• if one has HIV they have to take antiretroviral drugs
• salmonella is food poisoning
• salmonella is caused by a bacteria
• salmonella is shown thrown symptoms of

  fever

  abdominal cramps

  diarrhea
• salmonella is a result of eating uncooked beef and pork
• salmonella can last for up to 7 days
• to treat salmonella

  • use of paracetamol
  • rehydration
  • use of painkillers
  • use of antibiotics
• salmonella is caused by eating raw beef
• to prevent salmonella one should avoid uncooked meats
• to avoid salmonella poultry has been vaccinated
• to salmonella you should wash your hands
• penicillin is used to treat gonorrhea
• gonorrhea is caused by a bacteria
• if you have pain in urinating you have gonorrhea
• one symptom of gonorrhea is thick yellow or green discharge from vagina or penis
• gonorrhea is treated through antibiotics
• to prevent gonorrhea use contraception
• an example of contraception is a condom
• a virus has a protective shell
• viruses reproduce rapidly
• viruses live and reproduce inside cells causing damage
• viruses are resistant toantibiotics
• bacteria may reproduce rapidly through binary fission
• bacteria produces toxins that damage tissues and make us feel ill
• pathogens can be

  • bacteria
  • protists
  • virus
  • fungi
• pathogens depend on the host to provide suitable conditions and nutrients for growth and in order to reproduce
• pathogens are spread throgh

  • direct contact
  • water
  • air
• symptoms of measles are

  red skin rash