*Question*
Q: What are proteins encoded by? Choices: - DNA - RNA - codons - genes A:
**Answer**
genes

*Question*
Q: Along with other organelles, all eukaryotic cells possess what structure? Choices: - chromosomes - cell walls - flagella - nucleus A:
**Answer**
nucleus

*Question*
Q: Boyle discovered that what property of a gas is inversely proportional to its volume? Choices: - temperature - amount - mass - pressure A:
**Answer**
pressure

*Question*
Q: What element is released into the atmosphere by the burning of fossil fuels? Choices: - carbon - helium - oxygen - sulfur A:
**Answer**
sulfur