Students use living organisms (yeasts) to explore and learn about the characteristics that are shared by all living things. This lab can be used to introduce the topic of living things and their characteristics, or can be used as review and reinforcement after the topic has been taught.
What will the students be doing?
A fundamental question to be answered as biology students begin their study of biology concerns the differences between living and nonliving things. In this lab lesson plan, students will use living organisms (yeasts) to observe several characteristics that all living things share.
Problem or Purpose:
What characteristics of life can you observe that indicate yeasts are living organisms?
The 9 page download includes handouts that contain: Title, Purpose, Introduction, Materials List, Safety Precautions, Procedure, Analysis Questions, Student Data Pages, Answers to all Questions, and Teacher Preparation Notes.
What materials are needed for this lab?
Bromothymol Blue, 3 large test tubes, 3 small test tubes, 3 one hole stoppers with glass tubing inserts, Slides, Coverslips, Test tube racks, Microscopes, Yeast/molasses mixture, Yeast/water mixture, Water/molasses mixture, Plastic tubing, Graduated cylinder, Medicine Droppers
You can choose to have students write their own lab reports or you can use the included "student data sheets" for students to write on as they complete the lab.
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