Q: Sterols are a subgroup of what? Choices: - nuclides - nutrients - antibiotics - steroids A:
steroids

Q: What element is typically used to shield things from gamma rays? Choices: - gold - silver - aluminum - lead A:
lead

Q: Q: Enzymes are a type of what, and as such, they are not reactants in the reactions they control? Choices: - hormone - metabolite - neurotransmitter - catalyst A:
A: catalyst

Question: Q: In resting neurons, the plasma membrane has many open potassium channels but few open of which other channels? Choices: - silicon - oxygen - sulfur - sodium A:
Answer: sodium

*Question*
Q: Reflection, refraction, and diffraction are examples of what type of interaction? Choices: - winds - Oscillations - Currents - waves A:
**Answer**
waves

*Question*
Q: Gravitational force on a large scale dominates interactions between large objects because it is always what? Choices: - ugly - vulnerable - suitable - attractive A:
**Answer**
attractive