Answer:
The correct option is D.
Reason:
Simple diffusion is the process in which movement of molecules take place from a region of higher concentration to a region of low concentration with out expenditure of energy.
Chromatin. chromosomes are the condensed form.
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
