Q: Q: What happens to the electrical conductivity of metals when placed in a pot of boiling water? Choices: - stays the same - increases slowly - increases quickly - decreases slowly A:
A: decreases slowly

Q: Q: The strong affinity of concentrated sulfuric acid for water makes it a good agent of what? Choices: - diluting - hydrating - concentrating - dehydrating A:
A: dehydrating

Q: Q: What functional units of chromosomes determine specific characteristics by coding for specific proteins? Choices: - chromosomes - DNA - cells - genes A:
A: genes

Q: Q: Echinoderms lack what type of system that in humans consists of the brain and spinal cord? Choices: - autonomic system - endocrine system - peripheral nervous system - centralized nervous system A:
A: centralized nervous system