Understanding Osmosis and Tonicity

What is osmosis?

• The movement of solutes across a semi-permeable membrane.

• The diffusion of water across a semi-permeable membrane.

• The active transport of ions across a cell membrane.

• The process of cell division.

What does tonicity refer to?

• The absolute solute concentration in a solution.

• The relative solute concentration of two environments separated by a semi-permeable membrane.

• The movement of water from high to low concentration.

• The energy required for osmosis to occur.

What happens to red blood cells when placed in pure water?

• They remain unchanged.

• They shrink.

• They burst due to lysis.

• They become isotonic.

What is the term used to describe the shrinking of cells in a hypertonic solution?

• Lysis

• Crenation

• Isotonic

• Diffusion

In which direction does water move during osmosis?

• From hypertonic to hypotonic environments.

• From isotonic to hypertonic environments.

• From hypotonic to hypertonic environments.

• From areas of low solute concentration to high solute concentration.

What happens to red blood cells in an isotonic solution?

• They burst.

• They shrink.

• They remain unchanged.

• They become hypertonic.

What is the consequence of placing red blood cells in a hypertonic solution?

• The cells will burst.

• The cells will shrink.

• The cells will remain the same.

• The cells will become isotonic.

Which of the following best describes an isotonic environment?

• The solute concentration is higher inside the cell than outside.

• The solute concentration is lower inside the cell than outside.

• The solute concentration is equal inside and outside the cell.

• The solute concentration is constantly changing.

What physiological process is driven by osmotic pressure?

• Photosynthesis

• Cellular respiration

• Kidney operation

• Protein synthesis

Which of the following diseases is explained by the principles of osmosis and tonicity?

• Hypertension

• Diabetes

• Asthma

• Arthritis