Cellular Processes and Solutions

What effect does dissolving salt in water have on its freezing point?

• It raises the freezing point.

• It lowers the freezing point.

• It has no effect on the freezing point.

• It makes the water boil faster.

What is the process called when water molecules move across a semi-permeable membrane without requiring energy?

• Active transport

• Diffusion

• Osmosis

• Facilitated diffusion

In the U-tube experiment, if salt is added to Side B, causing it to have a higher solute concentration than Side A, where will the water initially move?

• From Side B to Side A.

• From Side A to Side B.

• It will not move at all.

• It will move equally in both directions.

If Side A has a lower solute concentration compared to Side B, what term describes Side A?

• Hypertonic

• Isotonic

• Hypotonic

• Equilibrium

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

• They shrink.

• They swell and may burst.

• They remain unchanged.

• They change color.

Why is an isotonic solution typically used for intravenous (IV) fluids in humans?

• To cause blood cells to shrink.

• To make blood cells swell.

• To maintain the normal size and shape of blood cells.

• To help blood cells burst and release nutrients.

If a saltwater fish is accidentally placed in a freshwater tank, what is the most likely immediate effect on its cells?

• The cells would shrink due to water loss.

• The cells would swell as water moves in.

• The cells would quickly adapt to the new environment.

• The cells would become isotonic with the freshwater.

How do plant root hair cells absorb water from the soil?

• The soil has a higher solute concentration than the root cells.

• The root cells have a higher solute concentration than the soil.

• Water is actively pumped into the root cells.

• The plant uses photosynthesis to pull water in.