Chemical engineering

Microorganisms that exist in the nature of this has morphology, structure and
distinctive traits, as well as bacteria. Bacteria that live almost no
color and contrast it with water, in which bacterial cells are suspended.
One way to observe the shape of bacterial cells making it easy to
is identified with a method of painting or staining. It also
to know the nature of the physiological function that describes the reaction of the cell wall
bacteria through a series of painting (Dwidjoseputro, 1994).

CHAPTER I: INTRODUCTION
1.1 Background
Protein (the root word from the Greek protos, meaning "the ultimate") is a complex organic compounds of high molecular weight polymer of a monomer-monomer amino acids linked together by peptide bonds. Protein molecules containing carbon, hydrogen, oxygen, nitrogen and sometimes sulfur and phosphorus. Protein plays an important role in the structure and function of all living cells and viruses.
Most proteins are enzymes or enzyme subunits. Other types of proteins play a role in structural or mechanical functions, such as proteins that form the stems and joints Cytoskeleton. Protein involved in the immune system (immune) as an antibody, the control system in the form of the hormone, as a storage component (the seeds) and also in the transport of nutrients. As one source of nutrition, proteins serve as a source of amino acids for organisms that are not able to form these amino acids (heterotrof).