What cells are capable of dividing without limit to replenish other cells as long as the person is still alive?
A) Epithelial cells
B) Connective tissue
C) Periodontal ligaments
D) Stem cells
D
Explanation: D) Stem cells have the remarkable potential to develop into many different cell types in the body. They serve as a sort of repair system for the body.
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Which types of hazards are microorganisms that cause severe illness or disease?
A. Chemical hazards B. Etiological hazards C. Asphyxiant hazards D. Radiological hazards
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On average, about ____ of the body's heat is lost through simple radiation of heat to the atmosphere.
A. 35% B. 45% C. 55% D. 65%
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