*Question*
Answer the following question given this paragraph: In some amines, the nitrogen atom replaces a carbon atom in an aromatic hydrocarbon. Pyridine (Figure 20.17) is one such heterocyclic amine. A heterocyclic compound contains atoms of two or more different elements in its ring structure. 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*
Answer the following question given this paragraph: The thermophiles live in extremely hot environments. For example, they can grow in hot springs, geysers, and near volcanoes. Unlike other organisms, they can thrive in temperatures near 100C, the boiling point of water!. Q: What is the term for organisms that live in extremely hot environments? Choices: - hydrophylic - thermophobes - exothermic - thermophiles A:
**Answer**
thermophiles

*Question*
Answer the following question given this paragraph: The stomach is a sac-like organ at the end of the esophagus. It has thick muscular walls that contract and relax to squeeze and mix food. This helps break the food into smaller pieces. It also helps mix the food with enzymes and other secretions in the stomach. For example, the stomach secretes the enzyme pepsin, which helps digest proteins. Q: What is a sac-like organ at the end of the esophagus? Choices: - appendix - larynx - spleen - the stomach A:
**Answer**
the stomach

*Question*
Answer the following question given this paragraph: Graphite and diamond are two forms of elemental carbon. Write the equilibrium equation between these two forms in two different ways. Q: Graphite is a form of elemental carbon what is another form? Choices: - carbonite - magnite - iron - diamond A:
**Answer**
diamond