Life: Metabolism: The Journey Of Life

Journey of biology started with very simple yet most important question “what is life?”. All that we know about life is all started with the understanding to know more about life. In the very beginning people were dependent on mythologies for unknown facts and belief of miracles were prevalent in the society.

The most intrigue feature about life that it is a virtue though it’s not materialistic, but it is a combined output of assemblage of large molecules and a vast network of reactions we call Metabolism. Now we know that all living creatures are made of cells which are considered as fluid filled compartments surrounded by membrane.

Our understanding towards life till now based on two important questions; first that how the cells are originated

This happened in a vast gap of time and via processes like evolution and natural selection. Out little understanding about universe and origin of earth, make it clear that in its first billion years earth was violent with volcanic eruptions lightening and torrential rains. The temperature then was high, and Earth was receiving all the radiation form the sun. These conditions allowed the interaction of atoms to form inorganic molecules which further progressed to develop simple organic molecule. The formation of molecules like amino acids and nucleotides, considered as marker events. Amino acids and nucleotides gets polymerised to form polypeptides and proteins and polynucleotides Ribonucleic acid and Deoxyribonucleic acid. While the protein forming amino acid are of 20 different types and 4 basic nucleotides are involved in polynucleotide synthesis, is universal for all life forms.

This theory is best supported by laboratory simulation experiments, where scientists observed that if mixture of gases like co2, ch4, nh3 and h2 are heated in water in presence of radiation or electric discharge they tend to form small organic