GROWTH OF BACTERIA Growth is the process of changing shape from initially small to large. Growth concerns the increase in volume of the individual itself. Growth generally depends on the condition of the food ingredients and also the environment. If conditionsfood and environment are suitable for these microorganisms, so the microorganisms will grow in a relatively short time and perfectly. Growth is the process of increasing the size or substance or mass of an organism, for example we macro creatures are said to grow when we get taller, bigger or heavier. In single-celled organisms, growth is defined as colony growth, namely an increase in the number of colonies, the size of the colony getting larger or the substance or mass of microbes in the colony increasing, growth in microbes is defined as an increase in the number of microbial cells themselves. The growth of microorganisms depends on the availability of water. Materials dissolved in water, which are used by microorganisms to form cell materials and obtain energy, are food ingredients. The demands of various microorganisms regarding the composition of food solutions and specific environmental requirements, vary greatly. Therefore many recipes were introduced to make breeding media for microorganisms. Microbes are microorganisms that need to be known about their ability to grow and live because some of them are often used for research purposes. Until now, scientific developments continue to explore the potential contained in microbes, therefore it is necessary to know the ins and outs of the microbes themselves. One of them is what factors can influence its growth. Each microbe has different characteristic growth conditions. The growth of bacteria under optimum conditions is faster compared to fungi and mold. This is because bacteria have a simpler cell structure, so that most bacteria have a generation time of only around 20 minutes compared to yeast and mold whose cell structures are more complicated and whose generation time is quite long. Understanding the Growth of Microorganisms Growth in microorganisms is defined as an increase in the number or total mass of cells that exceeds the original inoculum. Growth is an irreversible life process, meaning it cannot be reversed. Growth is defined as an increase in the quantity of cellular constituents and structure of an organism which can be expressed by size, followed by an increase in number, an increase in cell size, an increase in weight or mass and other parameters. As a result of increasing size and Cell division or an increase in the number of cells results in growth of the microbial population. Microbial growth in a medium experiences different phases, which are respectively called the lag phase, exponential phase, stationary phase and death phase. The exponential death phase is not observed under general conditions of bacterial culture growth, unless death is accelerated by the addition of toxic chemicals, heat or radiation. In order to grow, every living creature needs adequate nutrition and environmental conditions that support the growth process, including bacteria. Bacterial growth will generally be influenced by environmental factors. The influence of this factor will provide an image showing an increase in the number of different cells and ultimately provide an overview of the growth curve. The needs of microorganisms for growth can be divided into two categories, namely: physical needs and chemical or chemical needs. Physical aspects may include temperature, pH and osmotic pressure. Meanwhile, chemical needs include water, carbon sources, nitrogen, oxygen, minerals and growth factors.In multicellular organisms (many cells), what is called growth is an increase in the number of cells per organism, where the cell size also becomes larger. In unicellular (single-celled) organisms, growth is an increase in the number of cells, which also means an increase in the number of organisms that form a population or culture. In organisms that form soenocytes (acellular), during growth the cell size becomes large, but cell division does not occur. In microorganisms, individual (cell) growth can turn directly into population growth. So the boundary between cell growth and population growth, and as a single population that then occurs, sometimes because the changes are too fast, is difficult to observe and differentiate. Growth is in equilibrium if it occurs consistentlyregularly under constant conditions, so that the amount of addition of chemical components is also constant. For example, increasing the number of cell masses twice in an equilibrium state will result in increasing the number of cell components such as water, protein, ARN and ADN twice as well.