The basic unit. Unicellular organisms (like yeast) are just one cell. Multicellular organisms (like humans) have trillions.
Single-celled, often found in extreme environments like hot springs or salt lakes.
Groups of similar cells working together (e.g., muscle tissue). The Organism
Autotrophs (make their own food via photosynthesis).
An organism is any individual living system, such as an animal, plant, fungus, or bacterium. To be considered "alive," an organism generally must: The basic unit
Convert chemicals and energy into cellular components. Grow and Develop: Increase in size or complexity over time.
Scientists categorize every organism into three primary domains: such as an animal
Single-celled, no nucleus (Prokaryotes). Found everywhere from soil to your gut.
