Osmosis and Its Applications

What is the primary movement involved in osmosis?

• Movement of solutes from high to low concentration

• Movement of water from low to high concentration

• Movement of water from high to low concentration

• Movement of solutes from low to high concentration

What does the dashed line in the cell diagram represent?

• The nucleus

• The cell membrane

• The cytoplasm

• The mitochondria

In the cell diagram, which molecule is represented by blue dots?

• Water

• Salt

• Protein

• Glucose

What is the water concentration in distilled water?

• 80%

• 100%

• 90%

• 95%

Why do some people use distilled water in irons?

• It is cheaper than tap water

• It heats up faster

• It contains minerals that enhance ironing

• It prevents clogging due to lack of salts

What happens to red blood cells in a 10% salt solution?

• They swell up

• They shrink due to water loss

• They burst

• They remain unchanged

What percentage of water is typically found in red blood cells?

• 70%

• 80%

• 99%

• 90%

In osmosis, which direction does water move in relation to concentration?

• From low to high concentration

• In a circular motion

• It does not move

• From high to low concentration

What is the effect of osmosis on cells placed in a hypertonic solution?

• Cells lose water and shrink

• Cells burst

• Cells gain water and swell

• Cells remain the same

What is the main reason salt cannot diffuse through the cell membrane?

• It is too large

• It is charged and forms ions

• It is hydrophobic

• It is too small