Which of the following is true of the composition of both DNA and enzymes such as DNA lipase? A. Nitrogen and oxygen are the only elements they have in common.
B. Carbon and hydrogen are the only elements they have in common.
C. They are made up of basic units called amino acids.
D. They are made up of long chains of a basic unit.

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.