Q: Q: In an atom, what two major types of particles are located in the nucleus? Choices: - electrons and neutrons - molecules and neutrons - ions and electrons - protons and neutrons A:
A: protons and neutrons

Q: Q: Where are protons and neutrons located? Choices: - outside the nucleus - secondary nucleus - orbitals - central nucleus A:
A: central nucleus

Q: Q: Plasmodesmata and gap junctions are channels between adjacent cells of what respective types? Choices: - healthy and sick - new and old - plant and fungus - plant and animal A:
A: plant and animal

Q: Q: They had demonstrated that particles smaller than bacteria cause what? Choices: - blood - flight - damage - disease A:
A: disease