The long chains of amino acids fold to give each type of protein molecule a specific shape. The particular shape that a protein molecule has allows other molecules to fit into it. This is particularly important for antibodies and enzymes.
Introduction: The Wolds Way National Trail is a long distance footpath that follows a natural chalk escarpment which runs from Hull to Filey. At just over 76 miles long the walk crosses beautiful East Yorkshire countryside.
Long Distance Walks. The UK has an excellent range of long distance trails, ranging in length from about 70 miles, to over 600 miles. 1  Coast to Coast. 2  Cleveland Way.