Question: Q: Isotopes are named for their number of ______ plus neutrons? Choices: - electrons - atoms - nuclei - protons A:
Answer: protons

Question: Q: Because the solute is moving down the concentration gradient, and no input of energy is required, facilitated diffusion is considered what type of transport? Choices: - active - neutral - adaptive - passive A:
Answer: passive

Question: Q: How do heavy alkanes affect the skin? Choices: - they do not affect the skin - damage the skin - color the skin - form a protective layer A:
Answer:
form a protective layer