John F. Kennedy International Airport is one of the busiest airports in the New York City area, The Statue of Liberty, located on Liberty Island, is one of the cities biggest attractions.
There is a major difference between formal and functional regions. Formal regions are huge areas that are characterized by many activities. A functional region is a region that serves other regions, like major cities serving rural areas.
Structurally, proteins and peptides are very similar, being made up of chains of amino acids that are held together by peptide bonds (also called amide bonds). So, what distinguishes a peptide from a protein? The basic distinguishing factors are size and structure. Peptides are smaller than proteins. Traditionally, peptides are defined as molecules that consist of between 2 and 50 amino acids, whereas proteins are made up of 50 or more amino acids.