Osmosis practice write - up

Open Ended

How do you think different salt solutions might affect the mass of plant tissue during osmosis?

Multiple Choice

Why is osmosis important for plant cells?

• It helps plants absorb sunlight

• It allows plants to transport water and nutrients

• It helps plants produce seeds

• It allows plants to grow taller

Multiple Choice

Which piece of equipment is used to measure the mass of the plant matter in the osmosis practical?

• Balance

• Ruler

• Stop watch

• Boiling tube

Multiple Choice

What piece of equipment is used to measure the volume of solution ?

• thermometer

• paper towel

• measuring cylinder

• scalpel

Multiple Select

Which of the following are control variables in the osmosis experiment?

• Amount of salt solution

• Time submerged

• Length of plant matter

• Type of root vegetable

Multiple Choice

What is the independent variable in the osmosis practical?

• The mass of the plant matter

• The concentration of salt solution

• The amount of salt solution

• The time submerged

Open Ended

Explain why it is important to repeat the experiment three times and calculate a mean in scientific investigations ?

Multiple Choice

Which step is essential before measuring the FINAL mass of the potato cylinder in the osmosis experiment?

• Dabbing the potatoes with a paper towel to get rid of excess solution

• Adding sucrose solution to the test tubes

• Recording the initial length of the potato cylinder

• Heating the potato cylinders

Open Ended

Describe the step-by-step instructions for preparing the potato cylinders and salt solutions in the osmosis practical. Don't forget to self-check yout instructions using Discern

Multiple Select

Which of the following are necessary to calculate the percentage change in mass for each potato cylinder?

• Initial mass

• Final mass

• Sucrose concentration

• Volume of solution

Open Ended

Explain how the concentration of sucrose solution affects the percentage change in mass of the potato cylinder.

Multiple Choice

What conclusion can be drawn from the experiment when the concentration of sucrose inside the potato equals the concentration outside the potato?

• Water moves into the potato

• Water moves out of the potato

• No net movement of water occurs

• The potato gains mass

Open Ended

Would you like to learn more about osmosis or have any questions about the experiment?

Open Ended

What did you learn about how different salt solutions affect the mass of plant tissue?