Transmission of Pathogens (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is disease transmission?
What is disease transmission?
Movement of pathogens between hosts
Which describes indirect transmission?
Which describes indirect transmission?
Transfer via a vector unharmed by pathogen
Which pathogens spread by droplet infection?
Which pathogens spread by droplet infection?
TB bacteria, influenza, meningitis bacteria
Why is HIV transmission limited compared to other viruses?
Why is HIV transmission limited compared to other viruses?
HIV not robust outside body; needs fluids
What is a vector in disease transmission?
What is a vector in disease transmission?
Organism transferring pathogens unharmed
How do female Anopheles mosquitoes transmit malaria?
How do female Anopheles mosquitoes transmit malaria?
Inject saliva with parasites from glands
What defines an endemic disease?
What defines an endemic disease?
Constantly present in a population
How does resistance differ from immunity?
How does resistance differ from immunity?
Resistance inherited; immunity acquired
Below what temperature can't malarial parasites develop in mosquitoes?
Below what temperature can't malarial parasites develop in mosquitoes?
20°C
How has modern travel changed disease transmission?
How has modern travel changed disease transmission?
Pathogens cross continents in hours