The Cell Membrane & Transport

Multiple Choice

Which of the following best describes the main function of the plasma membrane in a cell?

• It controls the movement of substances in and out of the cell.

• It produces energy for the cell.

• It stores genetic information.

• It synthesizes proteins.

Multiple Choice

What is the main structural component of the plasma membrane?

• Proteins

• Carbohydrates

• Phospholipid bilayer

• Nucleic acids

Multiple Choice

Which of the following statements about phospholipids is correct?

• The head is hydrophobic and the tail is hydrophilic.

• Both head and tail are hydrophilic.

• The head is hydrophilic and the tail is hydrophobic.

• Both head and tail are hydrophobic.

Multiple Select

Select all correct statements about the phospholipid bilayer.

• It is made of two layers of phospholipids.

• The hydrophilic heads face outward toward water.

• The hydrophobic tails face inward away from water.

• It allows all molecules to pass freely.

Fill in the Blanks

The cell membrane is described as

, meaning some molecules can cross while most cannot.

Multiple Choice

Which type of protein in the plasma membrane allows larger molecules and water to move in and out of the cell?

• Channel proteins

• Lipid molecules

• Carbohydrate chains

• Cholesterol

Multiple Choice

What is the main function of the proteins labeled in the plasma membrane diagram?

• Transport molecules across the membrane

• Store genetic information

• Produce energy for the cell

• Break down waste products

Multiple Select

Which of the following are types of passive transport?

• Diffusion

• Osmosis

• Facilitated Diffusion

• Endocytosis

Open Ended

How would adding salt to the isotonic solution affect the cell?

Multiple Choice

What happens to a cell placed in a hypertonic solution?

• It shrinks as water leaves the cell.

• It swells as water enters the cell.

• It remains the same size.

• It bursts due to excess water.

Multiple Select

Which of the following statements about facilitated diffusion are correct?

• It requires transport proteins.

• It moves molecules from high to low concentration.

• It requires energy from the cell.

• It occurs across the plasma membrane.

Drag and Drop

Active transport moves molecules from regions of ​

Placeholder

concentration to regions of ​

Placeholder

concentration.

Drag these tiles and drop them in the correct blank above

low

high

equal

Multiple Choice

Which type of cell transport requires energy input from the cell?

• Facilitated diffusion

• Osmosis

• Active transport

• Passive transport

Open Ended

Explain the differences between passive and active transport in cells.