*Question*
Q: What cause rabies, measles, diarrheal diseases, hepatitis, polio, and cold sores? Choices: - parasites - bacteria - contaminants - viruses A:
**Answer**
viruses

*Question*
Q: The tiny hair present on mucus membranes is known as? Choices: - tissue - collagen - dendrites - cilia A:
**Answer**
cilia

*Question*
Q: What is the primary component of steel alloys? Choices: - carbon - titanium - alluminum - iron A:
**Answer**
iron

*Question*
Q: Producing light without heat is called what? Choices: - osmosis - thermoluminescence - bioluminescence - luminescence A:
**Answer**
luminescence