Q: A device that produces a very focused beam of visible light of just one wavelength and color is called? Choices: - mirror - microwave - prism - laser A:
laser

Q: Mercury and lead, which was once widely used in paint and gasoline, are examples of what type of metals? Choices: - gaseous heavy metals - alloys - sulfuric heavy metals - toxic heavy metals A:
toxic heavy metals

Q: Q: What flows like taffy or hot wax? Choices: - gas - water - sand dunes - molten rock A:
A: molten rock

Question: Q: What gems are created by mollusks, such as oysters? Choices: - crystals - turquoise - diamonds - pearls A:
Answer: pearls

*Question*
Q: What is the term for a cellular "scaffolding" that crisscrosses the cytoplasm? Choices: - protoskeleton - cellulose - collagen - cytoskeleton A:
**Answer**
cytoskeleton

*Question*
Q: In a single-celled organism such as chlamydomonas, there is no what after fertilization? Choices: - germination - spawning - meiosis - mitosis A:
**Answer**
mitosis