Prehistoric Eggs The earliest fossil animal embryos, dating from the Precambrian era, were found by American, Taiwanese, and Chinese scientists in phosphate deposits in China's Guizhou province.…
(Encyclopedia) dementiadementiadĭmĕnˈshə [key] [Lat.,=being out of the mind], progressive deterioration of intellectual faculties resulting in apathy, confusion, and stupor. In the 17th cent. the…
(Encyclopedia) liposomeliposomelīˈpəsōmˌ, lĭpˈə– [key], microscopic, fluid-filled pouch whose walls are made of layers of phospholipids identical to the phospholipids that make up cell membranes.…
(Encyclopedia) Pygmy or PigmyPigmyboth: pĭgˈmē [key], term used for dark-skinned people who live in equatorial rain forests and average less than 59 in. (150 cm) in height. Some studies make a…
WHAT IS A PROTIST? BIOGRAPHY: LOUIS PASTEUR (1822–1895)VIRUSESBACTERIAFIND OUT MOREAny living thing that is invisible to the naked eye and can be seen only under a microscope is called a…
(Encyclopedia) molecular biology, scientific study of the molecular basis of life processes, including cellular respiration, excretion, and reproduction. The term molecular biology was coined in 1938…
(Encyclopedia) birth defects, abnormalities in physical or mental structure or function that are present at birth. They range from minor to seriously deforming or life-threatening. A major defect of…
