Polar molecule

molecule

Is a group of atoms held together by covalent bonds.

nucleotides

Nucleic acids are polymers made of smaller subunits

diffusion

The process by which molecules move from an area of higher concentration to an area of lower concentration.

atom

The smallest component of an element having the chemical properties of the element

covalent bond

a chemical bond that involves sharing a pair of electrons between atoms in a molecule

enzyme

a protein that changes the rate of a chemical reaction

compound

a substance that is composed of atoms of to or more different elements that are chemically combined

metabolism

all of the chemical reactions that occur within an organism

acid

any compound that forms H+ ions in a solution

carbohydrate

any organic compound that is made of carbon, hydrogen, and oxygen and that provides nutrients to the cells of living things

element

any substance that cannot be broken down into simpler substances

isotopes

atoms of the same element that have different numbers of neutrons

mixture

combination of substances in which individual components retain their own properties

nucleic acid

complex macromolecule that stores cellular info in the form of a code

base

compound that produces hydroxide ions (OH-) in solution

isomers

compounds that have the same numbers of atoms of the same elements but different structures and hence different properties

peptide bond

covalent bond formed between amino acids.

polymer

large molecule formed when many smaller molecules bond together

pH

measure of how acidic or basic a solution is

solution

mixture of two or more substances in which the molecules of the substances are evenly distributed

polar molecule

molecule with an unequal distribution of charge, resulting in the molecule having a positive end and a negative end

ionic bond

the attractive force between two ions of opposite charge

amino acids

the building blocks of proteins

nucleus

the center of an atom

hydrogen bond

weak chemical bond formed by the attraction of positively charged hydrogen atoms to other negatively charged atoms