If you do not finish a lab in class, you should complete it outside class as homework. Quizzes are only available in class on the day of the lab, and again on the next lab meeting. You must take the quiz one of these two times for credit.
Some of the lab instructions ask questions, or ask you to write things down. I'm not asking for any of that to be handed in, so writing is up to you. You should at least think about what the answers to questions are, as I may ask something similar on the quiz.