Which level of organization comes after atoms in biological systems?

The correct progression in the levels of organization in biological systems follows a specific order, and after atoms, the next level is molecules. Atoms are the basic building blocks of matter and combine to form molecules, which are groups of atoms bonded together. Molecules play a crucial role in biology as they can form the components of cells, such as carbohydrates, proteins, lipids, and nucleic acids.

Understanding this hierarchy is essential in biology because it illustrates how complex structures are built from simpler components. Molecules interact and combine to form larger structures, which subsequently lead to cells, tissues, and ultimately organ systems.

The other levels of organization that follow molecules, such as cells, tissues, and organ systems, rely on the existence of molecules that give rise to their structure and function. Each level builds upon the previous one, making the study of biological systems a layered approach, starting from the simplest units like atoms to the more complex arrangements found in living organisms.