AP BIOLOGY

Detailed explanation-1: -The cell is the smallest structural and functional unit of living organisms, which can exist on its own. Therefore, it is sometimes called the building block of life.

Detailed explanation-2: -The cell is the smallest unit of life that can divide, multiply, grow and respond to stimuli from the environment. The cell structure is colloidal. The vital signs called life, manifest itself in this colloidal environment called protoplasm.

Detailed explanation-3: -Answer and Explanation: The cell is the smallest unit of life because it is the most fundamental building block of every living organism.

Detailed explanation-4: -The simplest, smallest unit of matter is the atom. Atoms bond together to form molecules, and molecules come together to form cells, the smallest unit of life. Cells group together to form tissues, such as muscle, or intestine.

Detailed explanation-5: -The smallest cell is Mycoplasma gallicepticum. It is about 10 micrometer in size.