Which nutrient deficiency makes children particularly vulnerable to lead toxicity?
a. Calcium
b. Vitamin C
c. Chromium
d. Iron
e. Selenium
Answer: D
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Which of the following does NOT occur during the stage of cancer known as promotion?
A) Mutated cells divide. B) Cancerous tumors grow. C) Mutated DNA takes over cells' genetic instructions. D) Mutated cells grow their own blood vessels.
Which of the following statements regarding calibration of thermometers is correct?
A. Thermometers can be calibrated by an ice-water method using a 50% ice/50% water mixture at least 2 inches deep. B. Thermometers can be calibrated by a boiling-water method at 212°F. C. Thermometers should be calibrated before the work shift begins. D. If a thermometer is dropped on the floor, it should be recalibrated. E. All of these are correct.
All of the following are correct about beneficial phytochemicals except:
A) they enable plants to grow. B) they are found in all foods. C) they give color to some foods. D) they provide plants protection against insects and disease.
Which of the following inflammatory conditions of the oral cavity occurs with a fungal infection such as Candida albicans?
a. Cheilosis b. Stomatitis c. Glossitis d. Gingivitis