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

3447 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Discuss the possible effects that mutation can have on the structure and function of a protein (3 marks)


Explain how blood glucose levels are controlled and how this is an example of negative feedback mechanisms.


How are B cells activated?


Explain how an electrochemical gradient is formed in the mitochondria, and how this gradient is used to synthesise ATP.


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