Question

which process allow movement in and out of cell 1 osmosis 2 diffusion 3 active transport​

Answer 1

Answer:

Diffusion

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. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.

Answer 2

Explanation:

movement if substances across cell membranes is necessary as it allows cells to aquire oxygen and nutrients, excrete waste products and and control the concentration of required substances in the cell (e. g oxygen, water, hormones, ions etc). This movement occurs by diffusion, osmosis, facilitated diffusion and active transport.