A hexahedron (plural: hexahedra) is any polyhedron with six faces. A cube, for example, is a regular hexahedron with all its faces square, and three squares around each vertex. There are seven topologically distinct convex hexahedra, one of which exists in two mirror image forms.
Some bacteria that can help the environment are called decomposers. They are nature's recyclers! They return basic chemicals to the environment for living things to reuse! For example, the leaves of many trees die in the Autumn and drop to the ground.ome bacteria that can help the environment are called decomposers. They are nature's recyclers! They return basic chemicals to the environment for living things to reuse! For example, the leaves of many trees die in the Autumn and drop to the ground.
Mounting evidence indicates that these proteins have important roles in cellular functions such as DNA segregation, cell polarity and sporulation. Other uniquely bacterial proteins, the MIN proteins, assist in division-site placement and also seem to form cytoskeletal structures.ince the advent of microbiology, cell shape has been an important criterion in the description and classification of bacterial species. This is reflected in taxonomy â Streptococcus species are named for their spherical or seed-shaped (coccus) cells, bacilli for their rod shape and spirochaetes for their spiral shape.