Gcse B2 OCR Flashcards
What 3 things could a white blood cells do to a pathogen?
~ they engulf/injest the pathogen
~ they produce antibodies
~ they produce antitoxins
What protects us from pathogens?
White blood cells
How do bacterias make us ill?
They produce toxins
Why do virus make us ill and how do they produce?
They produce toxins and destroy our living cells
They use our living cells to reproduce
Name 4 pathogens
Virus
Bacteria
Fungi
Protists
What is a pathogen?
A pathogen is A microorganism that creates an infectious disease
Name 4 ways communicable diseases are transmitted
Through dirty water
Carried in the air
Body fluids
Contaminated food
Name 3 ways a spread of disease can be reduced or prevented
Being hygienic by washing regularly
Vaccination
Isolatiolating infected individuals
What are the pros of vaccines?
They’ve helped control the many communicable diseases
Name 3 cons of vaccines
They don’t always work
People can have a bad reactions which are rare
Can be expensive
What is the nasel passage, trachea and lungs lines with to prevent pathogens getting in
Lined with mucus and cilia
What does he eyes produce to keep pathogens out
Tears which is a enzyme called lysozyme
What do pathogens have on the outside
Antigens with a specific enzyme shape
What can you do to prevent the spread of disease in plants
Crop rotation
Destroying infected
Biological control
What are vaccines
Inactive or dead pathogens
