This book contains some path-breaking studies in the field of microbiology with particular emphasis on yeast and fungi. It traces the progress of this field and highlights some of its key concepts and applications. The chapters included in this book focus on structures and classification of yeast and fungi, their physiology, applications of yeast and fungi in different fields that of utmost significance and bound to provide incredible insights to readers. Some of the diverse topics covered in this book address the varied branches that fall under this category. The book aims to provide a comprehensive overview of the discipline as well as the recent developments and researches in the field of yeast and fungal science.