The type of cellular transport that requires no energy.

• Active Transport
• Protein Pumps
• Passive Transport
• Endocytosis

What type of transport uses transport (channel) proteins to help molecules move from higher to lower concentrations?

• Protein Pumps
• Diffusion
• Facilitated Diffusion
• Osmosis

In pure water, a red blood cell from an animal will swell and burst, but a leaf cell from a plant will not. Which structure in the leaf cell will prevent the plant cell from bursting?

• cell membrane

• cell wall

• mitochondrion

• nucleus

During diffusion, molecules tend to move

• up the concentration gradient

• from an area of lower concentration to an area of higher concentration

• in a direction that doesn’t depend on concentration

• down the concentration gradient

When particles move up the gradient, from a low concentration to high concentration while requiring energy like it does to move a boulder up a hill, it is called _______.

• Passive Transport

• Active Transport

Cell membranes are described as selectively permeable.

Four students were asked to explain what this means. Which one is correct?

• Student 1: Cell membranes prevent all materials from entering the cell.

• Student 2: Cell membranes only provide structural support for the cell.

• Student 3: Cell membranes regulate which substances can enter and exit the cell.

• Student 4: Cell membranes allow water and water-soluble substances to enter the cell.

Proteins in the cell membrane serve what major function ?

• They provide the framework of the cell

• They serve as attachment site

• They help with transport of materials in and out of the cell

• They allow cells to communicate with other cells

What type of passive transport moves water molecules from high concentration to low concentration?

• Simple diffusion

• Osmosis

• Active transport

• Facilitated diffusion

What happens to an animal cell when it is placed in a solution with a high water concentration?

• The cell swells up and bursts.

• The cell shrivels up.

• The cell becomes plasmolysed.

• The cell becomes turgid.

What happens to an animal cell when it is placed in a solution with a low water concentration?

• The cell swells up and bursts.

• The cell shrivels up.

• The cell becomes plasmolysed.

• The cell becomes turgid.