Unit 2 Vocabulary

Front 1

Polar Molecules

Back 1

In order to have a polar molecule, there must be unequal distribution of the negatively charged electrons in the orbit of the molecule. The dipoles are unequally charged either because of the net electronegativity of the molecule or by the shape of the molecule causing the negative dipole.

Front 2

Enzyme

Back 2

a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.

Front 3

Carbohydrates

Back 3

any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy in the animal body.

Front 4

proteins

Back 4

any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids and are an essential part of all living organisms, especially as structural components of body tissues such as muscle, hair, collagen, etc., and as enzymes and antibodies.

Front 5

Cohesion

Back 5

the sticking together of particles of the same substance.

Front 6

Adhesion

Back 6

the action or process of adhering to a surface or object.

Front 7

Capillary action

Back 7

the tendency of a liquid in a capillary tube or absorbent material to rise or fall as a result of surface tension.