Label the parts of a DNA molecule

In which situations is the principle of cross-cutting relationship useful in determining relative age?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?