THE COMPOSITION OF BLOOD (2) VACCINATION AND IMMUNITY

Question 1

What are memory cells?

Answer 1

To prevent the body being infected by the same pathogen again
=Lymphocytes produce memory cells= which can ‘remember’ the antigens from an infection by a previous pathogen and can produce antibodies

Question 2

What are memory cells usefull for?

Answer 2

If the same pathogen reinfects=

The memory lymphocytes start to produce antibodies so the pathogen can be easily dealt with quickly

Question 3

What is this response called?

Answer 3

This response to a known antigen is called the secondary response

Question 4

What is a secondary immune response?

Answer 4

(antibody production increases ⇱dramatically and in a much shorter time period
—) Killing the microbes before they have time to multiply

–)To a point where they couldn’t cause disease

Question 5

What is a primary immune response?

Answer 5

1st immune response The antibodies slowly increase, peak at around ten days and then gradually decrease.

Question 6

What is active immunity?

Answer 6

where the body is actively producing antibodies to fight infection

Question 7

What is an example of active immunity?

Answer 7

Vaccinations,=an injection of a weakened strain of an infectious pathogen that causes the body to undergo ACTIVE IMMUNITY(produce antibodies)

Question 8

What is passive immunity?

Answer 8

where antibodies are given to a person via the blood of another person or animal

Question 9

What is an example of passive immunity?

Answer 9

Breastfeeding mothers pass antibodies to their children through the milk