Oxygen-Carrying Protein in the Blood: Hemoglobin. Hemoglobin is the protein that transports oxygen (O 2) in human blood from the lungs to the tissues of the body. Proteins are formed by the linking of amino acids into polypeptide chains.n hemoglobin, each subunit contains a heme group, which is displayed using the ball-and-stick representation in Figure 2. Each heme group contains an iron atom that is able to bind to one oxygen (O 2) molecule.
Decomposer: is an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances. A fungus, such as this mushroom, is a decomposer of dead plants.
Fungi as a group have special external enzymes they use to decompose things. A good deal of bacteria do decompose, but many are primary producers. (Such as cyanobacteria. b. Yes, all bacteria are single-celled, but saying 'most' fungi are not is kind of weird.ungi are decomposers, but bacteria are not. b. Bacteria are single-celled organisms, but most fungi are not. c. Only fungi have cell walls, but bacteria do not. d. Fungus only grow in moist locations, bacteria do not.