CELL BIOLOGY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site contractile vacuole An organelle that pumps excess water out of many freshwater protist cells, such as amoebae. The force that operates the contractile vacuole is strongly suspected of being generated by myosin Ic, a molecular motor that works in conjunction with actin. Related category    • CELL BIOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP