Q: The duodenum, the jejunum, and the ileum are the main regions of which organ? Choices: - lungs - large intestine - heart - small intestine A:
small intestine

Q: Fog disappears when the water droplets change back to what? Choices: - cold vapor - ice vapor - solid vapor - water vapor A:
water vapor

Q: Q: What is considered the smallest unit of life? Choices: - proteins - particle - molecule - cell A:
A: cell

Question: Q: Chemistry is the study of matter and energy and how they what? Choices: - distinct - division - interaction - interact A:
Answer: interact

*Question*
Q: Which acids provide the molecular blueprints for all proteins produced in living systems? Choices: - periodic acids - amino acids - nitrous acids - nucleic acids A:
**Answer**
nucleic acids

Q: Q: What type of hydrocarbon is coal? Choices: - mineral - gas - liqued - solid A:
A: solid