Protim858 Protim858 22-03-2018 Biology contestada a student looks at a slice of tissue on an unlabeled microscope slide. ***Unit 3 Lesson 1 begins with this question. Here are all the answers to this quick check. 1. D CELL WALLS 2.B NERVE CORD 3.A ALL CHORDATES SHARE A COMMON ANCESTOR... 4.B STABLE INTERNAL ENVIRONMENT 5. C ADAPT TO NEW LIVING CONDITIONS