Organelles<span> are unique to eukaryotic </span>cells<span> and are not present in </span>the cells <span>of prokaryotes like bacteria. Examples of </span>organelles include the nucleus, mitochondrion, chloroplast, Golgi apparatus, lysosome, and endoplasmic reticulum. Vital organs in humans include five essential organs necessary for survival, specifically the brain<span>, </span>heart<span>, kidneys, </span>liver<span>, and lungs. The human </span>brain<span> functions as the body's control center by transmitting and receiving signals to other organs through the </span>nervous system<span> and via hormones that are released. </span>
