REHS exam questions with correct answers

1. A factor or agent which increases the risk of cancer is known as a a. teratogen b. mutagen c. carcinogen d. fomite carcinogen 2. The four major causes of death among all age groups of Americans include all of the following except. a. homicide b. accidents c. malignant neoplasms d. heart disease homicide 3. In recent years, the largest number of rabies cases were associated with a. skunks b. bats c. dogs d. raccons. skunks 4. Asbestosis is caused by fine silicate fibers retained in the a. kidneys b. lungs c. colon d. abdomen lungs 5. An illness due to a specific infectious agent or its toxic product which is transmitted from a reservoir to a susceptible host either directly or indirectly is called a. an infectious disease b. a communicable disease c. a genetic disease d. a noncommunicable disease a communicable disease 6. Rocky mountain spotted fever is spread by a. flies b. spiders c. cockroaches d. ticks ticks 7. Mycotoxins are poisonous chemicals produced by a. bacteria b. vertebrates c. viruses d. fungi fungi 8. The study of the occurrence, frequency, and distribution of disease is a. entomology b. biology c. endocrinology d. epidemiology epidemiology 9. Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past or possibly intermittent pollution? a. fecal streptococci b. escherichia coli c. aerobacter aerogenes d. clostridium sporulates clostridium sporulates 10. Engineering controls are a. controls that isolate or remove hazards from the work place b. less effective than good training c. the last option that should be considered d. less effective than personal protection processes controls that isolate or remove hazards from the workplace