Which of the following statements about passive transport is correct?
1) passive transport operates independently of diffusion.
2)passive transport operates independently of the concentrations of the
substance being transported.
3) in passive transport, all movement of the transported molecule stops when
its concentration is the same on both sides of the membrane.
4) passive transport does not occur in the human body.
5) passive transport permits the transported molecule to move in either
direction, but the majority of transport occurs down the concentration
gradient of the molecule.

5) Passive transport permits the transported molecule to move in either

direction, but the majority of transport occurs down the concentration

gradient of the molecule.

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation: