Exploring the Properties of Cell Membranes

What are the basic materials needed for the Membrane Bubble Lab?

• Water, dish soap, corn syrup, light thread, four straws, and a large shallow tray

• Water, dish soap, honey, light thread, four straws, and a large deep tray

• Water, dish soap, sugar, heavy thread, six straws, and a deep tray

• Water, shampoo, corn syrup, light thread, two straws, and a small tray

How much dish soap should be added to the water to make the bubble solution?

• Until the beaker reaches 1000 milliliters

• Until the beaker reaches 1200 milliliters

• Until the beaker reaches 1100 milliliters

• Until the beaker reaches 950 milliliters

What is the purpose of the thread circle in the experiment?

• To measure the diameter of the bubble

• To create a large bubble

• To show the formation of protein channels

• To demonstrate the flexibility of the membrane

What property of the cell membrane is demonstrated by moving the bubble membrane up and down?

• Its ability to change color

• Its ability to split into two

• Its flexibility

• Its ability to form smaller bubbles

How can you show that materials can pass through the membrane without breaking it?

• By blowing into the bubble

• By dipping your finger in the solution and passing it through the membrane

• By shaking the bubble

• By adding more corn syrup to the solution

What does blowing smaller bubbles inside a larger bubble demonstrate?

• The presence of smaller membrane-bound organelles inside a cell

• The flexibility of the membrane

• The ability of the membrane to change color

• The process of cell replication

How can you demonstrate cell communication using bubbles?

• By moving the bubble membrane up and down

• By blowing smaller bubbles inside a larger bubble

• By splitting a bubble into two

• By creating a tunnel between a bubble and a straw

What does using a string to split a bubble into two demonstrate?

• The flexibility of the membrane

• The formation of protein channels

• The process of cell replication

• The ability of the membrane to change color

What is demonstrated by placing a thread circle on the surface of the membrane and poking it with a pencil?

• The process of cell replication

• The flexibility of the membrane

• The ability of the membrane to change color

• The formation of protein channels

What is the final demonstration in the Membrane Bubble Lab?

• Splitting a bubble into two

• Creating a large bubble

• Showing the flexibility of the membrane

• Demonstrating protein channels