6. What happens if the same pathogen enters the body again ?
It causes secondary response
Primary response
7. Once there are memory cells in the body, what is the person ?
Immune
Infected
8. After being exposed to the antigen, what Lymphocytes produce memory cells which remain in the body for a long time ?
T lymphocyte and B lymphocyte
T lymphocyte
B lymphocyte
None
9. Three ways antibodies help clear infection ?
Agglutinating pathogens - two binding sites so each antibody can bind to two pathogens. Neutralising toxins - Antibodies can bind to toxins produced by pathogen, making them neutralised. Preventing the pathogen from binding to a human cell.
Chemicals which kills host cells, receptors, more than one antibody
10. What is the purpose of the constant region on a antibody ?
It allows binding to receptors on immune system cells, is the same for all antibodies
Allow bonding to antigens
11. Are plasma cells identical to the lymphocyte that divides into it ?
Yes
No
Some
12. What cells are activated in primary response ?
T lymphocyte and B lymphocyte
Memory
13. What is the purpose of the disulfide bridge on a antibody ?
Its holds the monosaccharide chains together
It holds the polypeptide chains together
It holds the carbohydrate chains together
14. What do the plasma cells of the B lymphocyte serete alot of ?
Antibodies, specific to the antigen into the blood
Antigens, speific to the antibody, into the blood
15. Are there symptoms in primary response while antibodies are being made by plasma cells ?
Yes
No
16. Why is the primary response slow ?
Because when the antigen first enters the body, there arent many B lymphocytes which can make the required antibodies.
There arent enough phagocytes to engulf the pathogen in the body.
