Yeast is a single-celled eukaryotic organism found mainly in plants and soil.
Some yeasts are also found on the skin of some animals and even in their bodies.
Yeast mostly exists in budding form, rarely as single or paired cells.
These are microscopic organisms but are visible to the naked eye when present in large numbers.
Under bright field microscopy, some yeast cells are visible without staining.
In brightfield microscopy, yeast appears as oval-shaped cells, with tiny buds visible in some cells.
They are colorless but may appear milky white to off-white in bright view.
In order to observe organelles, yeast cells must be stained.
In fluorescence microscopy, different dyes can be used for different organelles to obtain more detailed organelle structures.
Using separate dyes for individual organelles increases contrast and allows them to be better distinguished.
