Biology

1. what cells enable a faster second immune response.
5. what is it called when the majority of a population is vaccinated against a disease.
6. what calls engulf, ingest and digest bacteria.
8. the process of the movement of cells or organisms towards or away from a particular chemical.
10. What is the process of deposition of fatty substances in the lining of the arteries.
11. what cells secrete mucus?
13. What are capable of neutralizing the effects of an antigen.
15. immunity that has been obtained through the placenta or breast milk, or by injection.
16. If you contact HIV it is unlikely to kill you but due to a weakened immune system an ............ disease will.
18. these have receptors that recognizes antigens on the surface of a virus-infected cell and secretes lymphokines.
19. what is a molecule that microorganisms produce to kill other microorganism?

2. what is the branch of medicine that deals with the incidence, distribution, and control of diseases called?
3. A condition in which the air sacs of the lungs are damaged and enlarged, causing breathlessness.
4. what is the name of a nonreversible lung disease that is a combination of emphysema and chronic bronchitis?
7. Accumulation of fatty substances in the artery walls.
9. When a disease is spreading world wide, what is it called?
12. What do the goblet cells secret?
14. This helps to maintain membrane fluidity.
17. what is the colorless fluid part of blood called?