A student studying biology asks the professor to describe how the ras gene is involved in cancer proliferation. What explanation by the professor is best?
a. It suppresses the action of the tumor-suppressor genes.
b. It changes the way the growth promotion genes work.
c. A mutation in this gene allows continuous cell growth.
d. It activates a cell surface receptor that allows signaling to the nucleus.
Answer: c. A mutation in this gene allows continuous cell growth.
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Which herbal preparation is contraindicated during pregnancy and lactation?
a. Kava kava c. Black cohosh b. Saint John's wort d. Asian ginseng
A neighbor tells a nurse that s/he has been experiencing hoarseness for over 3 weeks. The nurse should advise the client to see a doctor for
a. a prescription for antacids. b. possible laryngeal cancer. c. throat cultures and antibiotics. d. vocal cord paralysis.
The nurse is providing care to a patient who has a history of suing health care providers. Which of the following can the nurse do to reduce the risk of a lawsuit?
1. Establish communication and trust. 2. Spend as little amount of time with the patient as possible. 3. Delegate care activities to an unlicensed assistant. 4. Switch the assignment with another nurse.
The authority of the local health department is delegated by:
a. The federal government b. The state c. Local authorities d. Regional governing boards