Diffusion Through the Membrane Lab

In the Diffusion Through a Membrane lab, the model cell membranes allowed certain substances to pass through based on which characteristic of the diffusing substance?

• size
• shape
• color
• temperature

If frog eggs taken from a freshwater pond are placed in a saltwater aquarium, what will most likely happen?

• Water will leave the eggs
• Salt will leave the eggs.
• Water will neither enter nor leave the eggs.
• The eggs will burst

Tags

NGSS.MS-PS1-2

Base your answer on the information and diagram below and on your knowledge of biology. Starch turns blue black in the presence of a starch indicator. Dialysis tubing tied at both ends and containing starch solution is placed in a beaker of water. Yellowish brown starch indicator is then added to the water. This laboratory setup would most likely be used to demonstrate the process of

• active transport
• replication
• diffusion
• cellular respiration