HELP ASAP CHEMISTRY SCIENCE

Compare and contrast the bohr model and the electron cloud models of the atom.

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Building glycogen from glucose molecules is an example of