DNA encodes proteins, specifying the amino acids that compose them. Which of the following is most similar to a protein as the protein is being constructed? A. computer program
B. files in a drawer
C. A set of tools
D. A string of beads

The ultimate souce of energy for the food chain is solar energy from the sun. It allows plants to convert the solar energy to chemical energy for growth. The growing plants in turn allow heterotropic animals to consume them to obtain energy of their own.