Cell Reactions to Hypotonic and Hypertonic Solutions Explained

The video tutorial explains the effects of hypotonic and hypertonic solutions on cells. It warns against drinking salt water due to its dehydrating effects. An experiment using eggs demonstrates how cells react in different solutions. Eggs are prepared by dissolving their shells in vinegar, then placed in hypotonic and hypertonic solutions. The experiment shows that water enters cells in hypotonic solutions and leaves in hypertonic solutions, highlighting the semi-permeable nature of cell membranes.

What is the main characteristic of a hypotonic solution compared to the inside of a cell?

• No solutes present

• Higher concentration of solutes

• Equal concentration of solutes

• Lower concentration of solutes

Why is it dangerous to drink salt water?

• It is a good source of minerals

• It can cause severe dehydration

• It provides too much hydration

• It has no effect on the body

What is the purpose of using vinegar in the egg experiment?

• To add flavor to the egg

• To cook the egg

• To dissolve the egg's inner membrane

• To dissolve the egg's outer shell

What is the role of the semi-permeable membrane in the egg experiment?

• It allows all substances to pass through

• It prevents all substances from passing through

• It allows only water to pass through

• It allows water and small molecules to pass through

What happens to Egg A when placed in a hypotonic solution?

• It loses mass

• It gains mass

• Its mass remains unchanged

• It dissolves completely

What was the result for Egg B when placed in a hypertonic solution?

• It dissolved completely

• It gained mass

• It lost mass

• Its mass remained the same

In the repeated experiment, what was the outcome for Egg A in the hypertonic solution?

• It dissolved completely

• Its mass remained the same

• It lost mass

• It gained mass

What was the final mass change for Egg B in the hypotonic solution during the repeated experiment?

• It increased to 177% of its original weight

• It remained at 100% of its original weight

• It dissolved completely

• It decreased to 57% of its original weight

What is the main conclusion about cells in a hypotonic solution?

• Water leaves the cell

• The cell remains unchanged

• The cell dissolves

• Water enters the cell

What is the main conclusion about cells in a hypertonic solution?

• Water enters the cell

• Water leaves the cell

• The cell dissolves

• The cell remains unchanged