How does the body's response to a second infection by a bacterial pathogen differ from the first? (3 marks)

  • faster response due to the presence of memory cells 

  • there are many more cells specific for this pathogen therefore clonal selection and expansion of B cells is quicker 

- antibody production is quicker therefore the pathogen is killed quicker

BT

Related Biology A Level answers

All answers ▸

Describe the structure of haemoglobin and how it is suited to it's function?


Describe how the Meselsohn- Stahl experiment was set up. Describe how the results of the Meselsohn- Stahl experiment provide evidence for semi- conservative replication


Explain the differences between enzyme inhibitors


Did we evolve from apes? What does the term 'common ancestor' really mean?