Single function switches are the most commonly used adaptive switches. This type of switch performs one function (i.e., on/off) this switch has only one function - on or off. The switch may only be in one of the states at any one moment in time. Multiple function switches may perform two or more functions.
Echinocytes and keratocytes should be considered in the differential diagnosis of spur cell anemia. Echinocytes or burr cells are spiculated red blood cells with uniform, narrow, spikelike surface projections. Spur cells have fewer spicules, and the spicules vary more in size than echinocytes. Keratocytes are acanthocytelike cells with bizarre shapes and horny projections. Differential Diagnoses.
Lysosomes and peroxisomes (illustration) These organelles are the recycling center of the cell. They digest foreign bacteria that invade the cell, rid the cell of toxic substances, and recycle worn-out cell components. Mitochondria are complex organelles that convert energy from food into a form that the cell can use. They have their own genetic material, separate from the DNA in the nucleus, and can make copies of themselves. Nucleus. The nucleus serves as the cellâs command center, sending directions to the cell to grow, mature, divide, or die. It also houses DNA (deoxyribonucleic acid), the cellâs hereditary material.