Answer the following question given this paragraph: Q: What facilitates the diffusion of ions across a membrane? Choices: - photon channels - ionic bonds - passive transport - ion channels A:
ion channels

Answer the following question given this paragraph: Ribosomes are found in both eukaryotic and prokaryotic cells. Ribosomes are not surrounded by a membrane. The other organelles found in eukaryotic cells are surrounded by a membrane. Q: Which type of membrane are ribosomes surrounded by? Choices: - partial - permenant - temporary - none A:
none

Answer the following question given this paragraph: The type of atom is determined by the atomic number (i. e. the number of protons). The atomic mass of an atom is approximately the number of protons plus the number of neutrons. Typically, the atomic mass listed in a periodic table is an average, weighted by the natural abundances of different isotopes. 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

Answer the following question given this paragraph: Besides their strength, another pro of electromagnets is the ability to control them by controlling the electric current. Turning the current on or off turns the magnetic field on or off. The amount of current flowing through the coil can also be changed to control the strength of the electromagnet. Q: Electromagnets can be controlled by controlling what type of current? Choices: - magnetic - positive - negative - electric A:
electric