What is the basic structure of every living organism?

What is the basic structure of every living organism?

• A. Atom
• B. Molecule
• C. Spine
• D. Cell

Answer: (D)

Life is organized around cells—the smallest units that can carry out all the activities that define living things. Every organism, from the simplest bacterium to a human, is built from cells, and these cells provide the compartments and machinery for metabolism, energy use, growth, and interaction with the environment. In unicellular organisms, a single cell does everything, while in multicellular organisms, many cells divide and specialize to form tissues and organs, all tracing back to cell division. Atoms and molecules are essential components of matter, but they don’t by themselves perform the integrated processes of life. A spine is a structure found in some animals and isn’t a universal feature of all living organisms, nor does it represent the fundamental unit that makes life possible.

Life is organized around cells—the smallest units that can carry out all the activities that define living things. Every organism, from the simplest bacterium to a human, is built from cells, and these cells provide the compartments and machinery for metabolism, energy use, growth, and interaction with the environment. In unicellular organisms, a single cell does everything, while in multicellular organisms, many cells divide and specialize to form tissues and organs, all tracing back to cell division. Atoms and molecules are essential components of matter, but they don’t by themselves perform the integrated processes of life. A spine is a structure found in some animals and isn’t a universal feature of all living organisms, nor does it represent the fundamental unit that makes life possible.