Question

gummy bear lab
purpose: to investigate the movement of water by measuring the change in size of a gummy bear.
background: gummy bears are made of gelatin and sugar. diffusion is the movement of materials from an area of high concentration to an area of low concentration. osmosis is the diffusion of water. we will be using gummy bears to model osmosis and diffusion

prelab question:
a student places a piece of fresh potato (which contains living plant cells) into a highly salty solution and leaves it for an hour. when they check it later, the potato feels soft and flexible instead of firm.

question:
using your understanding of osmosis, explain what happened to the plant cells in the potato and why. be sure to describe the direction of water movement and how this affected the cells.

student name: _____________________________ id:_______________
respond with r.a.c.e. | short constructed response (scr) | checklist
race
restate the question
answer the question
cite text evidence
explain what it means | ___________________________ | did i use complete sentences?
| ___________________________ | did i answer the question?
| ___________________________ | did i use the text evidence?
| ___________________________ | does my evidence back up my answer?
| ___________________________ | is my response and evidence based on the text?
| ___________________________ | does it have less than 450 characters?

Explanation:

1. Restate: The question is about what happened to potato plant cells in a salty solution and why, focusing on osmosis.
2. Answer: The plant cells in the potato lost water, causing them to become soft.
3. Cite Evidence: Osmosis is the diffusion of water from high to low concentration. The salty solution has a higher solute (salt) concentration than the potato cells’ cytoplasm.
4. Explain: Due to osmosis, water moved out of the potato cells (from the cell’s high water concentration to the solution’s low water concentration, as the solution is highly salty). When water left the cells, the plant cells lost turgor pressure, so the potato became soft and flexible instead of firm.

Answer:

To explain what happened to the plant cells in the potato:

• Restate: The question asks about the change in potato plant cells in a salty solution and the role of osmosis.
• Answer: The plant cells in the potato lost water, making the potato soft[SSE Completed, Client Connection Error][SSE Completed, Client Connection Error][LLM SSE On Failure]