Light energy into chemical energy
<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>
<span>They both contain nitrogenous bases.
</span>DNA genomes are stable and can grow to much larger sizes (other viruses and all organisms larger than them). They are both nucleic acids. Regarding structure, DNA and RNA<span> are similar because they are both built of nucleotides, structures consisting of one nuclease, a sugar (ribose or deoxyribose respectively) and a phosphate group.</span>
