What is the definition of a pathogen and give two examples. (3 marks)

An organism that can cause disease - e.g. virus, bacterium, fungus

TR
Answered by Thomas R. Biology tutor

3396 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe how fertiliser run-off can cause damage to a lake's ecosystem.


Which of these DNA mutations is likely to have the greatest effect on the structure of the encoded protein? Justify your answer. •Single base substitution •15 bases base deletion •Insertion of 2 bases


In photosynthesis, what are the products of the Light Dependent reaction, and the Light Independent reaction (Calvin Cycle)?


The development of palm oil plantations in Sumatra has removed areas of forest that provided the habitat for tigers. Explain why planting strips of trees to link the forests would have an effect on the frequency of genetic disorders in these tigers.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning