NEET BIOLOGY

Detailed explanation-1: -Cells constitute tissues and atoms constitute molecules.

Detailed explanation-2: -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. These tissues group together to form organs which perform a specific function within a larger organ system.

Detailed explanation-3: -Tissues (which are made of cells, which are made of organelles, which are made of molecules, which are made of atoms).

Detailed explanation-4: -Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.

Detailed explanation-5: -The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.