1.6*- Video Questions

What is the main component of the cell membrane?

• Phospholipids

• Proteins

• Nucleic acids

• Carbohydrates

What does it mean when a cell membrane is described as semi-permeable?

• It allows only water to pass through.

• It allows some materials to pass through while blocking others.

• It allows no materials to pass through.

• It allows all materials to pass through.

In simple diffusion, molecules move from an area of:

• Low concentration to high concentration

• High concentration to low concentration

• Equal concentration to equal concentration

• No concentration to high concentration

What happens to a cell in a hypertonic solution?

• It remains the same size

• It shrivels up

• It bursts

• It swells up

When a cell is in an isotonic solution, what happens to its size?

• It gets larger

• It gets smaller

• It bursts

• It stays the same