Question

An inanimate object that may be contaminated with a pathogen and thus serve as an agent of disease transmission is called: Vector fomite pathogen host none of the above Which of the following bacteria virulence factors lyses erythrocytes causing anemia? a. hyaluronidase collagenase coagulase hemolysin e. bacteria kinase 9. Which of them listed in question eight above dissolves blood clots? Surface molecules or structures that bind a pathogen to a specific surface of the host cell are collectively called: a. capsules b. fimbrae adhesins d. leukocidin e. peplomeres 11. The science of epidemiology: evolved in relation to the great epidemic diseases evaluates the control of diseases in a defined population embraces the study of all diseases d. all of the above none of the above 12. A discase maintaining a relatively steady, high-level frequency at a moderately regular interval in a geographic area is said to be: a. sporadic pandemic c. endemic an epidemic e none of the above d

Answer 1

7) fomite are objects which carry the infectious agents, for example, vessels, clothes, pen etc, ( objects which contact the infected individual to which the pathogen can be attached).

( vectors are living organisms through which the disease transmits example: mosquito) so the answer is b) fomite.

8) hemolysins are molecules that lyse the erythrocytes, so hemolysins can decrease the number of erythrocytes and cause anemia, so the answer is d) hemolysin.