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

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers