atypeofcarbohydratethatformstheouterskeletonofarthropods,suchasinsectsandcrustaceans,andthecellwalls of fungi.
a substance that donates hydrogen ions and therefore lowers pH
a monomer of nucleic acids; contains a pentose sugar, a phosphate group, and a nitrogenous base
the attraction between water molecules and molecules of a different substance
the intermolecular forces between water molecules caused by the polar nature of water; creates surface tension
a long chain of amino acids linked by peptide bonds
_____ bond. A type of strong bond between two or more of the same or different elements; forms when electrons are
shared between elements
_____ covalent bond. A type of covalent bond that forms between atoms when electrons are shared equally between atoms, resulting in no regions with partial charges as in polar covalent bonds
amajorconstituentofthemembranesofcells;composedoftwofattyacidsandaphosphategroupattached
to the glycerol backbone
_____ bond. A weak bond between partially positively charged hydrogen atoms and partially negatively charged elements or molecules
a biological macromolecule in which the ratio of carbon to hydrogen to oxygen is 1:2:1; carbohydrates serve as energy sources and structural support in cells.
a long chain of monosaccharides
______ number. The number of protons plus neutrons in an atom
a positively charged particle that resides in the nucleus of an atom; has a mass of 1 and a charge of +1
a positive ion formed by losing electrons
a class of macromolecules that are nonpolar and insoluble in water
a biological macromolecule composed of one or more chains of amino acids
_____ acid. A biological macromolecule that carries the genetic information of a cell and carries instructions for the functioning of the cell
_____ covalent bond. A type of covalent bond in which electrons are pulled toward one atom and away from another, resulting in slightly positive and slightly negative charged regions of the molecule
a substance that absorbs hydrogen ions and therefore raises pH