Download HW 10/18 Diabetes and Diffusion

Name: _______________________________
Diabetes and Diffusion
Paragraph #2 – How does diabetes, diffusion, osmosis, and semipermeable membranes relate to each
other?
1. How do diabetes and diffusion relate to each other? How are they similar?
2. What role does the cell membrane and osmosis play in this project?
3. Why are diabetics always feeling thirsty?
4. How does diabetes prove that a cell membrane is semi-permeable? Hint: use the words insulin and
glucose in your response.
Paragraph #3 – Scientific Question and hypothesis
1. Our scientific question is “Will sugar water act like salt water around a cell?”
2. What is your hypothesis to the scientific question? If we add sugar water to a red onion cell, color what
you think will happen to the cell membrane.
3. Why do you think this will happen? What lab or evidence do you have to help support your hypothesis?
4. Why are we using a red onion cell and not an animal cell?
Paragraph #4 – The Experiment
Normal Cells - Using your salt cell experiment as a guide:
1. Draw what you are seeing.
2. Make observations about the cell.
Sugar Water - Using your salt cell experiment as a guide:
1. Draw what you are seeing.
2. Make observations about the cell.
Paragraph #5 – Conclusion
1. What are some conclusions about what you saw?
Diabetes Graphic Organizer
Paragraph #1 – The Introduction
I am going to be writing about _______________________. Diabetes is when
________________________________. There are two types of diabetes, _____________________ and
___________________. For Type 1 diabetes, the body does not make ___________________. Without this, sugar
cannot get into the cell. For type 2 diabetes, the body makes ________________, but it
_________________________. We have chosen to study diabetes because it’s just like our lab on
________________. In this lab, we placed salt water around a ___________________ and then watched the cell
membrane get ___________________________.
Paragraph #2
When you have diabetes, the sugar cannot get through the ___________________. It cannot get through because
the ________________ does not work. The __________________ acts like a key to the door helping the sugar get
through this part. This part of the cell controls what gets in and out. This is called ________________________.
Sugar wants to move from high concentration to low concentration, which is called ___________________________.
Since the sugar can’t get into the cell, it tricks the cell. Water then comes out of the cell. When water moves from
high concentration to low concentration, it is called _____________________________. For people with diabetes,
when water comes out of the cell, they always feel ________________________. This means they drink a lot of
__________________ which makes them have to _________________ a lot.
Paragraph #3
Our scientific question is “Will sugar water act like salt water around a cell?” Based on what I saw in the
___________________ lab, I think when we add sugar water to a red onion cell, the cell membrane will
__________________________. We chose to use a red onion cell because __________________________.
Paragraph #4 – The experiment
When we began to do our experiment, we first looked at a __________________. I made the following observations:
1. The cell color was _________________________.
2. The ____________________ filled the entire inside of the cell.
3. The three organelles, the _______________________, the _______________________, and the
___________________.
We then put several drops of __________________ on the red onion cells and waited. After ____________________
minutes, we went back and looked at the cell. Here are things we saw:
1. The color was ___________________________.
2. The ______________________ got ________________________.
3. The cell wall __________________________.
Paragraph #5 – The conclusion
In this lab we have been studying _________________________. Diffusion is different in a normal cell because the
sugar can move from ___________________ to _________________ and not get trapped outside the cell. For
diabetics, the sugar cannot move because the ________________ does not work.
Since sugar gets stuck outside the cell, it tricks the cell into giving up its _______________. The movement of water
from high concentration to low concentration is called _____________________. Because the water can move
through the _______________________but the sugar cannot, it proves that the cell is ________________________
which means only certain things can get through.
When we looked at the normal cell, it looked _________________________ while the sugar water cell looked
_____________________. The sugar water cell looked _____________________ compared to the salt water cell. We
did see that the sugar water cell took longer to change because ______________________________________.
Finally, people with diabetes are always _________________. Our red onion plant cell showed why this happens.
Since sugar gets stuck outside the cell, it tricks the cell into giving up its _______________. Because the water moves
out of the ____________________, it signals the brain that we need to drink more _________________________.