How does summation operate in a post-synaptic cell? a). it adds up all of the previous action potentials and releases one of that value. b). post-synaptic cells do not fire. c). input from many cells is required for it to fire. d). sodium ions are moved from one cell to the next in an additive way.

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

The deserts of the sahara and australia are associated with