Arid

Science / Weather / Arid: A term used for an extremely dry climate. The degree to which a climate lacks effective, life-promoting moisture. It is considered the opposite of humid when speaking of climates.

Oligosaccharide

Science / Chemistry / Oligosaccharide: A carbohydrate that consists of only a few linked monosaccharide units. MORE

Polysaccharide

Science / Chemistry / Polysaccharide: A carbohydrate consisting of a large number of linked monosaccharide units. Examples of polysaccharides are cellulose and starch. MORE

Polysaccharides

Science / Biology / Polysaccharides: Long chains of monosaccharide units bonded together; e.g., glycogen, starch, and cellulose. MORE

Disaccharides

Science / Biology / Disaccharides: 1. Sugars made up of two monosaccharides held together by a covalent bond; e.g., sucrose and lactose. 2. Type of sugar (saccharide) composed of two sugar molecules bonded together with an ester (coval MORE

Aridity

Science / Biology / Aridity: The condition of receiving sparse rainfall; associated with cooler climates because cool air can hold less water vapor than warm air. Many deserts occur in relatively warm climates, however, because o MORE

Monosaccharides

Science / Biology / Monosaccharides: Simple carbohydrates, usually with a five- or six-carbon skeleton; e.g., glucose and fructose. A carbohydrate composed of a single sugar unit, such as glucose, ribose, deoxyribose, etc. MORE

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