AP Biology Cell Transport

In which direction does water move in osmosis?

• From an area of high water concentration to low water concentration

• From an area of low water concentration to high water concentration

• From an area of high solute concentration to low solute concentration

• From an area of low solute concentration to high solute concentration

Answer explanation

Water moves in osmosis from an area of low water concentration to high water concentration.

Which of the following is not a factor that affects the rate of osmosis?

• Concentration gradient

• Temperature

• Surface area of the membrane

• Color of the solution

Which of the following is a function of the Golgi apparatus?

• Detoxification of the cell and lipid synthesis.

• Protein and rRNA synthesis.

• Synthesis of chemical energy (adenosine triphosphate).

• Chemical modification of newly synthesized proteins before they are packaged for trafficking to other parts of the cell or outside of the cell.

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NGSS.HS-LS1-2

Which of the following is a reason that cells are so small?

• Cells are small because they want to maximize their surface area-to-volume ratio.

• Cells are small because they want to maximize their volume-to-surface area ratio.

• Cells are small because they need to produce extremely small macromolecules.

• Cells are small because they prefer to work together in clusters of many thousands that wouldn't otherwise fit anywhere.

Which of the following describes a solution that has a higher concentration than the internal environment of the cell?

• Hypotonic

• Isotonic

• Hypertonic

• Transtonic

If a cell is placed in a hypotonic solution, what is likely to happen to it over time?

• The cell will swell, as water flows into the cell.

• The cell will not change, as it will be at dynamic equilibrium.

• The cell will lyse, as water bursts the cell.

• The cell will shrink, as water flows out of the cell.

What is the solute potential also known as?

• Osmotic potential

• Pressure potential

• Water potential

• Turgor pressure

A person would never have pure water put into their veins in a hospital because their cells would...

• Shrink/Dehydrate

• Expand

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NGSS.HS-LS1-3

A saltwater snail is placed in freshwater. What happens to its cells?

• They shrink

• They swell

• Nothing happens

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NGSS.HS-LS1-3

According to the fluid mosaic model of cell membranes, phospholipids___________________.

• can shift laterally along the plane of the membranee

• frequently flip-flop from one side of the membrane to the other

• occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane

• have hydrophilic tails in the interior of the membrane