Problem:OPTIONS:
- atom
- molecules
- protons
- nucleus

Q: The single circular dna chromosome of bacteria is not enclosed in what, but instead occupies a specific location called the nucleoid within the cell? A:
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A: nucleus

Problem:OPTIONS:
- lead
- feldspar
- pyrite
- quartz

Q: What mineral is used to produce glass? A:
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A: quartz

Problem:OPTIONS:
- liquid source pollution
- simple source pollution
- targeted source pollution
- point source pollution

Q: What type of pollution results from the contaminants that enter a waterway or water body through a single site? A:
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A: point source pollution

Problem:OPTIONS:
- muscular system
- lymphatic system
- circulatory system
- nervous system

Q: Multiple sclerosis, huntington's disease, parkinson's disease, and alzheimer's disease are example of diseases of which body system? A:
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A:
nervous system