What is life?
Q: What is life?
A: Life is a concept in biology that refers to the characteristics, state, or mode that separates a living thing from dead matter.
Q: What do people who study life called?
A: People who study life are called biologists.
Q: What is a lifespan?
A: A lifespan is the average length of life in a species.
Q: How does most life on Earth get its energy?
A: Most life on Earth is powered by solar energy, with the only known exceptions being chemosynthetic bacteria living around hydrothermal vents on the ocean floor.
Q: What kind of molecules are essential for all life on Earth?
A: All life on Earth is based on the chemistry of carbon compounds, specifically involving long-chain molecules such as proteins and nucleic acid.
Q: How are these molecules wrapped inside cells?
A: These long molecules are wrapped inside membranes as cells when combined with water, which all life needs.
Q: Is this true for all forms of possible life in the Universe?
A: This may or may not be true of all possible forms of life in the Universe; it is true of all known forms of current life on Earth today.
