21-30 Flashcards
formed when one or more electrons are transferred from one atom to another
Ionic Bond
forms when electrons are shared between atoms.
Covalent Bond
the electrons in the outer shell or energy level that are available for bonding.
Valence Electrons
the measure of acidity or alkalinity of a solution.
pH
a substance that dissolves in water to release a hydrogen ion. (H+)
Acid
a substance that dissolves in water to release a hydroxide ion. (OH)
Base
the nucleic acid that contains all genetic information for a cell.
Deoxyribonucleic Acid (DNA)
The shape of DNA that resembles a spiral staircase or a twisted ladder.
Double Helix
The building block of living organisms that passes genetic information from one generation to the next. (e.g. DNA)
Nucleic Acid
a monomer of nucleic acid; consisting of a sugar, phosphate, and a nitrogen base. (e.g. A,T,G,C)
Nucleotide