Which of the following BEST describes electrons found in an atom? a. Electrons are the positively charged particles in an atom.
b. Electrons are larger than protons or neutrons in an atom.
c. Electrons, combined with protons, form the nucleus in an atom.
d. Electrons move quickly around the nucleus in an atom.

Which of the following statements accurately defines epidermis? a. a thick protein fiber composed of the protein collagen b. hard, dense bone tissue found on the outer surface of a bone c. single layer of epithelial cells and the underlying basal lamina d. outer, protective layer of the skin composed of stratified squamous keratinized epithelial tissue