* Cell Transport Lesson

Multiple Choice

Which of the following best describes the main function of the cell membrane?

• To provide energy for the cell

• To regulate movement of substances in and out of the cell

• To produce proteins

• To store genetic information

Open Ended

Why is it important for cells to regulate what enters and exits through their membranes?

Multiple Choice

What does it mean when a cell membrane is described as semipermeable?

• It allows all substances to pass through.

• It allows some substances to pass through but not others.

• It blocks all substances from passing through.

• It only allows water to pass through.

Multiple Choice

Based on the diagrams, why are some molecules able to pass through the cell membrane while others cannot?

• All molecules are the same size.

• The membrane only allows water molecules to pass.

• The size and type of molecule determine if it can pass through the membrane.

• Molecules can only pass through with energy.

Multiple Select

Which of the following are types of passive transport?

• Simple Diffusion

• Facilitated Diffusion

• Osmosis

• Protein Pump

Open Ended

Explain the difference between passive and active transport in cells.

Open Ended

Which would have a higher concentration of sugar: coffee with 1 teaspoon of sugar or coffee with 2 teaspoons of sugar? Explain your reasoning.

Multiple Choice

Where is there a low concentration of dye?

• at the bottom of cup
• in the color
• at the top of cup 
• no concenteraion gradient

Multiple Choice

Where is there a low concentration of perfume?

• in the bottle
• on the hand
• in the room
• in the top

Multiple Choice

Which process involves the movement of molecules from a high concentration to a low concentration without requiring energy?

• Active transport

• Diffusion

• Endocytosis

• Exocytosis

Multiple Choice

Which of the following molecules can diffuse directly through the cell membrane without the help of a protein?

• Oxygen

• Glucose

• Sodium ions

• Water

Multiple Choice

Which of the following statements about passive transport is correct?

• It requires energy from the cell.

• It moves molecules against the concentration gradient.

• It includes diffusion, facilitated diffusion, and osmosis.

• It only occurs in plant cells.

Open Ended

Describe what happens to water movement when the concentration of solute outside a cell is different from inside the cell.

Multiple Choice

Osmosis

• diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
• the diffusion of particles from an area of high concentration to an area of low concentration
• diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
• the diffusion of particles from an area of low concentration to an area of high concentration

Multiple Choice

Which type of solution causes a cell to swell and possibly burst?

• Isotonic

• Hypertonic

• Hypotonic

• None of the above

Multiple Choice

This egg has shrunk, what type of solution was it placed in?

• hypotonic solution
• hypertonic solution
• isotonic solution
• active transport

Open Ended

Explain how the concentration of solute inside and outside a cell affects the movement of water and the cell's size.

Multiple Choice

According to the rhyme, what happens to a cell in a hypotonic solution?

• The cell dries.

• The cell shrinks.

• The cell grows.

• The cell stays the same.

Multiple Choice

The cell below is in a _________ solution.

• Hypotonic
• Hypertonic
• Isotonic

Multiple Choice

What type of solution is this cell in?

• Isotonic
• Hypertonic
• Hypotonic
• diffused

Open Ended

Why is an isotonic solution preferred for animal cells?

Multiple Select

Select all the correct statements about isotonic solutions.

• The solute concentration inside and outside the cell is equal.

• Water moves equally in and out of the cell.

• The cell shrinks in an isotonic solution.

• The cell stays the same size in an isotonic solution.

Multiple Choice

Which type of solution causes a plant cell to become turgid, and why is this condition preferred in plants?

• Hypertonic; because water moves out and the cell shrinks

• Isotonic; because water moves equally and the cell stays the same

• Hypotonic; because water moves in and the cell grows

• Hypertonic; because water moves in and the cell grows

Multiple Choice

What type of solution allows water to enter the plant cell?

• hypotonic solution
• hypertonic solution
• isotonic solution
• active transport

Multiple Select

Select all correct statements about isotonic solutions and their effect on cells.

• Water moves equally in and out of the cell

• Cell shrinks

• Cell stays the same

• Higher concentration of solute outside the cell

Open Ended

Why is it important to pay attention to the numbers (such as g/L or %) when analyzing the effects of saline solutions on cells?

Open Ended

Compare what happens to a cell placed in a hypertonic solution versus a hypotonic solution. Use evidence from the diagrams and practice slides.

Open Ended

Reflecting on today's lesson, what questions do you still have about cell transport or the function of the cell membrane?

Multiple Choice

Why is it important for the cell membrane to regulate what enters and exits the cell?

• To maintain homeostasis

• To increase cell size

• To produce energy

• To divide the cell