Objective 3 29. In the diagram below the molecules labeled A, B, D, E, and F are transcription factors. Objective 8 30. A plant uses a pigment in its leaves as a light receptor molecule. When the length of the nights reach a certain critical length in the late summer some genes are turned on and others are turned off resulting in the change in leaf color and leaf fall.
Life is organized b.
Living things grow, develop, and reproduce e. Living things adapt Lecture 17. Objective 4 31. Objective 5 32. Objective 6 33. Objective 6 34.