____ is made possible by input of energy, transformation of energy from one form to another

• A. Energy
• B. Matter
• C. Life
• D. Growth

Answer: (C)

Life is made possible by input of energy and the transformation of energy from one form to another because all cellular work depends on metabolism. Metabolism includes breaking down molecules to release energy and using that energy to build or move things, keep conditions stable, and reproduce. For example, photosynthesis captures light energy and stores it as chemical energy in glucose, which is then converted into ATP during respiration to power processes like muscle movement, active transport, and biosynthesis. Growth needs energy to assemble new macromolecules and expand cell size and number. Without continual energy input and its transformation, living systems cannot maintain their organized state. That’s why life is the best fit here.