A pathogen that has nutrients absorbed from its environment is called fungus. Fungus is a eukaryotic microorganism that is a heterotroph and acquire its food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment
The sequence of amino acids. - The three-dimensional shape of the folded protein. - If the coding sequence has a mutation that leads to a change in the amino acid sequence, the protein may have a different three-dimensional shape, reducing its activity.