*Question*
Q: What is a measure of both speed and direction of motion? Choices: - distance - intensity - acceleration - velocity A:
**Answer**
velocity

*Question*
Q: Regardless of the mode, light is modeled as traveling in straight lines called what? Choices: - waves - arrows - electrons - rays A:
**Answer**
rays

*Question*
Q: What is a three-dimensional anticline called? Choices: - cave - volcano - cyclone - dome A:
**Answer**
dome

*Question*
Q: What component of a prokaryote is unique in molecular composition and mechanism of propulsion? Choices: - the sporangia - the membrane - the amoeba - the flagella A:
**Answer**
the flagella