81.Nutrients are recycled in the atmosphere with the help of certain microorganisms referred to as

82.Which of the following structures are commonly present in animal cells and not in plant cells ? 1. Mitochondria 2. Lysosomes 3. Ribosomes 4. Centrosomes

83.Energy transfers of Kerbs cycle and electron transport chain takes place in

84.The genetic code can be translated through an intermediate, adaptor molecule by

85.The unit structure of which gene is made up of is