Question

25. Trachoma is a bacterial infection that affects people's a. Eyes b. Genitals c. Mouth d. Stomach 26. Which of the following is not true about innate immunity a. It is the first defense to respond b. It is not affected by prior contact with the pathogen. c. It may involve physical or chemical barriers d. Only present when there is an infection and is not working constantly. 27. Which of the following is true of Eosinophils a. Have a bilobed nucleus. b. Less phagocytic than neutrophils and have bright pink granules c. Thought to play a role in the immune response to parasites d. All of the above are true. e. None of the above are true. 28. What is an antigen a. Any substance (usually foreign) that binds to an antibody b. Same thing as an immunogen. c. A substance that induces an immune response. d. All of the above are true. e. None of the above are true 29. Immune specificity permits millions of different to be recognized a. White blood ceills b. Red blood cells c. Antigens d. Platelets 30. Chlamydia is an obligate intracellular organism, what does this mean? a. Has both RNA and DNA b. Must develop within a cell c It is a gram negative organism. d. It develops outside of cells Short Answer (total 30 points) 1. Choose either A or B to answer (5 pts) A Briefly describe to me how a live vaccine might be created. Give me some detail ar help, Tell me the differences between naturally and artificially acquired immunity as we active immunity. B.

Answer 1

Ans 25- (a) Eyes- Trachoma is an infectious disease caused by bacterium Chlamydia trachomatis. The infection causes a roughening of the inner surface of the eyelids.

Ans 26- (d) Only present when there is infection and it is not working constantly- Innate immunity is in-born immunity system.

Ans 28- (d) All of the above are true

Ans 29- (c)- Antigens.