Q: What facilitates the diffusion of ions across a membrane? Choices: - photon channels - ionic bonds - passive transport - ion channels A:
ion channels

Q: Which type of membrane are ribosomes surrounded by? Choices: - partial - permenant - temporary - none A:
none

Q: Adding the number of protons plus the number of neutrons in an atom, decides it's approximate mass, what is another word for this value? Choices: - electron count - atomic mass - real number - atomic number A:
atomic number

Q: Electromagnets can be controlled by controlling what type of current? Choices: - magnetic - positive - negative - electric A:
electric