| A | B |
|---|
| Enzyme | protein that speeds up chemical reactions in a cell |
| Lipid | saturated fat, unsaturated fat, waxy covering on fruits & leaves |
| polysaccharide | carbohydrate that is composed of many molecules of sugar bonded together |
| atom | the basic unit of matter that composes all living things |
| polar molecule | a molecule that has a positive charge at one end and a negative charge at the other end; will dissolve in water |
| covalent bond | bond in which electrons are shared equally between two atoms |
| ionic bond | bond that is formed by the attraction between oppositely charged ions |
| solvent | a substance that enables another substance to dissolve |
| solute | a substance that is dissolved into another substance |
| cohesion | the attraction between molecules of the same substance |
| adhesion | the attraction between molecules of different substances |
| element | a pure substance consisting of all the same type of atom; C, H, N, O, P, and S are all elements |
| amino acid | compounds that create proteins |
| protein | a macromolecule that is composed of amino acids; examples are muscle, bone, hair, skin, hormones and antibodies |
| biology | the study of life |
| study | the devotion of time and attention to acquire knowledge |
| quiz | a brief, informal test of knowledge |
| integrity | the quality of being honest and having strong moral principles |
| electron | a particle that composes atoms and has a negative charge; involved in bonding between chemicals |
| organic compound | a compound that contains carbon atoms bonded to other carbon atoms and hydrogen; made by living organisms |
| compound | the chemical combination of two or more elements in definite proportions |
| acid | any compound that forms hydrogen ions in a solution; substances with a pH < 7 |
| base | any compound that forms hydroxide ions in a solution; substances with a pH >8 |
| carbohydrate | a compound made from C, H, and O with 2 hydrogen atoms for every one carbon and oxygen |
| monosaccharide | carbohydrates made up of only one sugar molecule; glucose, fructose and galactose are examples |
| nucleic acid | large and complex organic molecules that store and transfer information to the cell |
