Midterm Review Part 2

When will there be free movement of molecules in both directions across the semipermeable membrane?

• When there are more molecules on the right side of the membrane

• When there are more molecules on the left side of the membrane

• When there are equal molecules on both sides of the membrane.

According to these results, what type of cell environment were the elodea cells in?

• Hypotonic

• Hypertonic

• Isotonic

Tags

NGSS.HS-LS1-3

Which red blood cell would be in the hypertonic solution?

• Cell #1

• Cell #2

• Cell #3

Tags

NGSS.HS-LS1-3

Fill in the blank: The process where there is free movement of molecules in both directions across a semipermeable membrane is known as ________.

• Passive transport

• Equilibrium

• Concentration Gradient

How would you know a cell has been in a hypertonic solution?

• A. The cell shrunk, because it released water to dilute the high solute concentration in the solution

• B. The cell swelled, because it took on water to dilute the high solute concentration in the cell

• C. The cell stayed the same, because water flowed freely in both directions across the cell membrane.

Tags

NGSS.HS-LS1-3

If the mineral ions from the soil were needed in the root cell, but had to move against the concentration gradient, which of the following processes would be used?

• Active Transport

• Diffusion

• Facilitated Diffusion

• Osmosis

Which of the following is NOT a characteristic of active transport?

• A. It moves substances against a concentration gradient

• B. It requires energy from the cell

• C. It involves facilitated diffusion

• D. All of the above

If a cell needs solid particles moved into the cell against the concentration gradient, but are too large to fit through the cell membrane or transport proteins, which process would take place?

• Pinocytosis

• Phagocytosis

• Exocytosis

• Diffusion

If a cell needs digested/broken down particles moved into the cell against the concentration gradient, but are too large to fit through the cell membrane or transport proteins, which process would take place?

• A. Pinocytosis

• B. Phagocytosis

• C. Exocytosis

• D. Simple diffusion

If a cell needs to expel unwanted substances out of the cell against the concentration gradient, what process would take place? Assume the particles are too large to fit through the cell membrane or transport proteins.

• Pinocytosis

• Phagocytosis

• Exocytosis

• Simple diffusion