Q: What should you let liquid waste do before placing the container in the trash? Choices: - expand - generate - melt - evaporate A:
evaporate

Q: An enzyme is an organic catalyst produced by what? Choices: - DNA - the liver - amino acid - living cell A:
living cell

Q: Q: Mars appears red because of large amounts of which element in the soil? Choices: - carbon - coal - mercury - iron A:
A: iron

Question: Q: The muscles in arteries and veins that are largely responsible for regulation of blood pressure are known as what type? Choices: - opposing muscles - vascular muscles - elongated muscles - smooth muscles A:
Answer: smooth muscles

*Question*
Q: What type of matter in the spinal cord has the appearance of an ink-blot test and is subdivided into regions that are referred to as horns? Choices: - bright matter - wet matter - dark matter - gray matter A:
**Answer**
gray matter

(Question)
Q: Ionic compounds take on the form of extended three-dimensional arrays of cations and what else? Choices: - oxides - electrons - crystals - anions A:
(Answer)
anions