Scientists say that most of the mass of an atom is located in the nucleus because protons and neutrons are located in the nucleus, and electrons are outside the nucleus. Since an electron has A. Almost zero
B. A large

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Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.