1. Move independently: While some cells can move (like white blood cells or sperm), most cells in the body are stationary. They don't need to move around independently like individual organisms.
2. Reproduce sexually: Most cells in the body reproduce asexually through mitosis. Only specialized sex cells (sperm and egg) reproduce sexually to create offspring.
3. Perform specialized tasks like digestion or photosynthesis: Specialized organs and systems are responsible for these functions. Cells within these organs contribute to the process, but they don't carry out the entire task individually.
4. Think or feel: Cells lack a brain and nervous system, so they don't have the capacity for conscious thought or emotions.
5. Sense external stimuli: While cells have receptors to respond to their environment, they don't have the complex sensory organs found in animals. They can't see, smell, hear, or taste.
Important Note: This is a general overview, and there are exceptions to these rules. For example, some cells in the immune system can move independently, and specialized nerve cells transmit signals throughout the body.
