what is ATP produced during respiration used for?
1, to synthesise larger molecules from smaller ones to make new cell material. plants make amino acids from sugars, nitrates and other nutrients so in turn the amino acids form proteins
2, for movement, animals use ATP to contract muscle cells enabling the organism to move
3, to stay warm, when an animals surroundings are colder than they are, they increase rate of respiration in order to transfer more energy by heating so they can keep their body at a constant temperature