*Question*
Q: What type of compound contains atoms of two or more different elements in its ring structure? Choices: - aldehyde - polymer - hydrocarbon - heterocyclic A:
**Answer**
heterocyclic

*Question*
Q: What is the term for organisms that live in extremely hot environments? Choices: - hydrophylic - thermophobes - exothermic - thermophiles A:
**Answer**
thermophiles

*Question*
Q: What is a sac-like organ at the end of the esophagus? Choices: - appendix - larynx - spleen - the stomach A:
**Answer**
the stomach

*Question*
Q: Graphite is a form of elemental carbon what is another form? Choices: - carbonite - magnite - iron - diamond A:
**Answer**
diamond