Unit 2- Cell Processes Review

Which of these is a function of the cell membrane in all cells?

• Producing cellular nutrients

• Maintaining homeostasis

• Neutralizing chemicals

• Preserving cellular wastes

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A student put together the experimental setup shown below. The selectively permeable membrane is permeable to both types of solute molecules shown. How would you expect the molecules to change over time in the diagram?

• Both types of molecules will move to reach equilibrium.

• All of Molecule D will move to side B.

• All of Molecule C will move to side B.

• There will be no change over time.

The diagram given shows animal and plant cells placed in 3 different types of solutions. What type of solution is represented by diagram C?

• Isotonic

• Hypertonic

• Hypotonic

• Hydrotonic

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A student placed 2 eggs in vinegar to dissolve the egg shells. In order to investigate osmosis, he then placed the equal-sized eggs in the solutions listed in

the table. What can you conclude about the solutions from the change in mass of the eggs?

• Corn syrup is a hypotonic solution and distilled water is a hypertonic solution.

• Corn syrup is a hypertonic solution and distilled water is a hypotonic solution.

• Corn syrup is a hypertonic solution and distilled water is an isotonic solution.

• Both corn syrup and distilled water are isotonic solutions.

The image below represents a cell with a semipermeable membrane. The process of osmosis would explain the net movement of water into a cell if the initial percentage of-

• protein was 35% inside the cell and 30% outside the cell.

• water was 95% inside the cell and 90% outside the cell.

• water was 90% inside the cell and 95% outside the cell.

• protein was 30% inside the cell and 35% outside the cell.

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The diagram below shows how a paramecium maintains homeostasis. A paramecium normally lives in a hypotonic environment in which water continually diffuses into the cell. To maintain homeostasis, the paramecium must pump out large amounts of water using its contractile vacuole. If the paramecium is placed in this hypotonic environment, which of the following will occur?

• Water will diffuse into the paramecium.

• Water will diffuse out of the paramecium.

• Salt will be pumped out of the paramecium by the vacuole.

• Salt will be pumped into the paramecium by the vacuole.

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The diagram below represents a white blood cell engulfing some bacteria. Which of the following statements is true in regards to this process? Which of the following statements is true in regards to this process?

• This represents exocytosis (active transport) and requires energy.

• This represents facilitated diffusion and no energy is required.

• This represents endocytosis (active transport) and requires energy.

• This represents diffusion and no energy is required.

Which part of the cell membrane is hydrophilic?

• The Phosphate

• The Lipids

• The Carbohydrate

• The Protein

What is the purpose of the structure labelled A.

• A is a Carbohydrate, the purpose of it is to allow molecules to enter and leave the cell

• A is a Phospholipid, the purpose of it is to allow molecules to enter and leave the cell

• A is a Channel Protein, the purpose of it is to allow molecules to enter and leave the cell

• A is a Nucleic Acid, the purpose of it is to allow molecules to enter and leave the cell

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Which of the following is correct?

• A and B are Active Transport, while C is Passive Transport

• A and B are Passive Transport, while C is Active Transport

• A is Passive Transport, while B and C are Active Transport

• A and C are Active Transport, while B is Passive Transport

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