INTRODUCTION 

Bacteria are single-celled microorganisms that do not have a nuclear membrane. It is also metabolically active and is divided by binary fission. Nevertheless, bacteria appear to be a relatively simple form of life because they easily adapt to environmental conditions. Bacteria are found almost everywhere on Earth and are essential to the planet's ecosystems. Fungal, singular, fungi, are a group of eukaryotic, non-phototrophic organisms with rigid cell walls, including mushrooms, molds and yeasts. Yeast is a microscopic fungus consisting of solitary cells that reproduce by budding. It is an organism found in Kingdom fungi contains cell walls and is ubiquitous. They are classified as heterotrophs among living organisms. Both bacteria and fungi are microorganisms that cannot be seen by the human eye. This is because most microorganisms are much smaller than 0.1mm and a microscope must be used to observe them directly. In general, the diameter of microorganisms ranges from 0.2 - 2.0 microns.

Bacteria are also known as producers and decomposers. Examples of producers are chemosynthetic bacteria and photosynthetic bacteria while decomposers are soil bacteria. In addition, the characteristic of bacteria is that they do not have a nucleus and cell organelles, instead the cell wall is made of peptidoglycan. it can also live in an area with a neutral pH value such as 6.5 to 7.0.

On the other hand, fungi are known as decomposers. Additionally, fungi are characterized by having a nucleus and cell organelles, while the cell wall is made of chitin. It can also live in areas with slightly acidic pH values ​​such as 4.0 to 6.0. The transmission occurs through spores and the source of energy for them is to feed on both living and dead cells.

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