Molecules are held together by electrons shared between bonded atoms. For example, consider the formation of an H2 molecule from two separate hydrogen atoms: 2 approachinghydrogen atoms(2 H) a hydrogen molecule(H2) As the two atoms approach, each nucleus begins to attract the other atom's electrons.
Definition of Hyphomycetes. in some classifications. : a subclass of fungi coextensive with the order Moniliales or including both the Moniliales and the Mycelia Sterilia.
Molds are a group of fungi called  Hyphomycetes , which are chracterized with having filamentous hyphae, and producing airborne spores or conidia (asexual propagules). In nature, molds are decomposers to recycle nature's organic wastes. In medicine, they are the producers of antibiotics. Fungi are a glomeration of organisms in a separate taxanomic kingdom, in which they differ from Monera (Bacteria), Protista (single-cell eucaryotes mostly), Plants and Animals.