BOIIII Dis organism a prokaryote cause it ain't got no nucleus.
A virus is bacterial. It has cells but it isn’t a living thing so to speak.
An organism is a number of tissues (organs) working together. It has a conciseness, and also has cells.
In the case of breathing, probably because we have gotten so used to it by now.
Answer:
I think Osteocytes and hematopoietic stem cells
<span>Motility: Mechanical breakdown and mixing of ingested nutrients by smooth muscle movements, passage of nutrients through the digestive tract, and elimination of undigested or unabsorbed residues from the body.</span><span>Secretion: Release of enzymes, hormones, and other substances that take part in digestion.</span><span>Digestion: Chemical reduction of ingested nutrients into particles, then into molecules small enough to cross the lining of the gut and reach the internal environment of the body.</span><span>Absorption: Passage of digested nutrients from the gut lumen into the blood or lymph, which distributes them throughout the body.</span>