* Cellular Structure: Yeast are single-celled organisms, meaning they have all the essential components of a living cell, including a cell membrane, cytoplasm, DNA, and ribosomes.

* Metabolism: Yeast undergo metabolic processes, converting nutrients into energy and producing waste products.

* Growth and Reproduction: Yeast reproduce asexually through budding, creating new yeast cells.

* Response to Stimuli: Yeast respond to changes in their environment, like temperature or nutrient availability.

While dried or inactive yeast may appear lifeless, they are actually dormant. With the right conditions (like water and warmth), they can become active again, demonstrating their living nature.