MOTOR: a machine that uses energy to provide motion.
PROTEIN: An organic molecule that is made of amino acids in a specific
shape which allows it to perform a specific function in a living being.
EUKARYOTIC CELL: a cell with a nucleus. Plants and animals have eukaryotic
cells. Bacteria are prokaryotes: they have no cell nucleus.
RPM: revolutions (complete turns) per minute.
EFFICIENCY: (motion energy)/(input energy)
WORDS TO LEARN