This is a five-minute video to provide you with basic information concerning hemoglobin. It includes the types, composition, synthesis of subunits of hemoglobin, chain arrangement and types of Hb. Timeline 0:00 Introduction 0:32 Basics of hemoglobin 1:13 Composition of heme 1:39 Subunits of hemoglobin 2:08 Synthesis of non-protein part of subunit 2:27 Site of synthesis of protein part of subunit 2:38 Classification of subunit 3:12 Methemoglobin 3:36 Arrangement of Hb 4:08 Types of Hb