Oncogenic viruses include all the following except
A. Hepatitis B virus.
B. Measles virus.
C. Epstein-Barr virus.
D. Papillomavirus.
E. HTLVI and HTLVII viruses.
Answer: B
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The physical location in the environment to which an organism has adapted is its ________.
A. community B. habitat C. biome D. population E. niche
If food-borne disease transmission requires ingestion of the pathogen, followed by growth of the organism, and release of toxins in the intestine it is referred to as a food-borne ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following could alter the level of expression of a gene?
A. an increase in environmental temperature B. an increase in salinity C. exposure to UV radiation D. presence of a particular energy substrate E. All of the choices are correct.
Most peptic ulcers are caused by
a. antibiotics. b. bacteria. c. heartburn. d. lactose intolerance. e. malnutrition.