Describe how pathogens cause infections and describe how the immune system defends itself against these pathogens

Pathogens like viruses and bacteria reproduce rapidly within the body's cells which causes damage. Bacteria particularly may produce toxins which make you feel ill.White blood cells ingest bacteria or virally infected cells by phagocytosis to destroy them. They can also produce antibodies to destroy particular pathogens and antitoxins to counteract any toxins produced by the pathogen. Memory cells can form which then confer immunity to that pathogen by creating specific antibodies and remaining in the system.

HM
Answered by Holly M. Biology tutor

15921 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What is a chromosome?


What is an Extremophile?


Two people who are heterozygous for retinitis pigmentosa are expecting a baby. Draw a genetic diagram to calculate the probability that the baby will have the condition. Use R for the normal allele and r for the allele for retinitis pigmentosa.


Explain the importance of the blood vessel taking blood out of the Bowman's capsule being narrower than the blood vessel taking blood into the Bowman's capsule.


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences