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.
Whan a plant, animal, or insect dies, that plant, animal, or insect is broken into tiny pieces and those pieces become part of the soil. This is called decomposition. Bacteria, fungi, and some worms are what break down dead plants, animals, and insects.The bacteria, fungi, and worms are called decomposers. Decomposers need to eat some of the dead things so they can live and grow.The tiny pieces left over after decomposers eat become part of the soil.he bacteria, fungi, and worms are called decomposers. Decomposers need to eat some of the dead things so they can live and grow. The tiny pieces left over after decomposers eat become part of the soil.