Q: In a cell cycle, what kind of regulator molecules allow advancement to the next stage? Choices: - strong - similar - negative - positive A:
positive

Q: What is the only amphibian without legs? Choices: - alligators - frogs - newts - caecilians A:
caecilians

Q: Light can be used to eject what from a solid material? Choices: - protons - calories - neutrons - electrons A:
electrons