1. surface area to volume ratio lesson
Cell transport unit

2. Inquiry instructions Cell 1
Choose one person in your group to be the Mitochondria of a cell, one person to be a RBC, one person to be the Lungs, and one person to be the Timer.
On the floor measure out a 2 meter by 2 meter square, tape off the sides and tape a small X in the center.
To do the activity, the Lungs must Breathe In Deeply then let out the breath. The Timer needs to use a stop watch to record the time it takes to complete the activity.
During the Lung’s breath, the RBC must pass a ball to the Mitochondria, the Mitochondria has to turn around and pass it back to the RBC BEFORE the Lungs exhale.
See how long it takes to do this and write that time down.

3. Inquiry instructions Cell 2
Use the same people in your group to be the Mitochondria, RBC, Lungs, and Timer.
The Mitochondria needs to stand somewhere in the center part of the classroom. The RBC is outside the room to start. The room is a cell and the doors are the transport molecules of the Cell Membrane.
The Lungs must Breathe In Deeply then let out the breath. The Timer must record the time it takes to complete the task.
During the Lung’s breathing, the RBC must pass a ball to the Mitochondria, the Mitochondria has to turn around and pass it back to the RBC BEFORE the Lungs exhale.
See how long it takes to do this and write that time down.
Answer the questions on the next slide.

4. Answer these questions in your IAN NOTEBOOK
Which cell was the largest? Which was the smallest?
Which cell was able to transport Oxygen into the cell and then expel Carbon Dioxide to the lungs faster? Why?
Which cell requires the LEAST amount of energy to finish this process?
Which cell do you think is the most EFFICIENT in completing cell processes? Why?
How could the cell you think is the LEAST EFFICIENT get better at this process? What do you think it should do?

5. Surface area to volume ratio

6. Calculate a ratio Take one small and one large box available.
Calculate the Surface Area of both boxes:
SA = L x W x number of sides
Calculate the Volume of both boxes:
V = L x W x H
Calculate the RATIO of both boxes like you saw on the video, SA divided by V. SA/V

7. Complete Lab sheet
After you do all of your calculations write everything you did down on your Lab-Modeling Cells worksheet.
Answer all of the questions and write your conclusion.
Glue your lab worksheet into your notebook and wait for me to stamp it when it is complete.