2025-26cell membrane powerpoint

Open Ended

How does the structure of the cell membrane contribute to its function?

Multiple Choice

Why is the cell membrane compared to a fortress?

• Because it is made of stone

• Because it protects the cell by controlling what enters and leaves

• Because it is round in shape

• Because it is the largest part of the cell

Open Ended

Compare the roles of the cell membrane in both eukaryotic and prokaryotic cells based on the diagrams provided.

Multiple Choice

Which of the following is a function of the cell membrane?

• It produces energy for the cell

• It regulates what enters and exits the cell

• It stores genetic information

• It synthesizes proteins

Open Ended

Explain how the structure of the cell membrane contributes to its function in maintaining homeostasis.

Multiple Choice

Which of the following statements about the lipid bilayer is correct?

• It is made of a single layer of phospholipids

• It allows the cell membrane to be rigid and inflexible

• It consists of two layers of phospholipids that allow flexibility

• It is only found in prokaryotic cells

Multiple Select

Select all the correct statements about cell membrane proteins.

• Transport proteins provide channels for molecules to enter and exit the cell

• Receptor proteins are specifically shaped to aid in cell communication

• Transport proteins are responsible for cell communication

• Receptor proteins allow only water to pass through the membrane

Open Ended

Describe how the endocrine system and nervous system differ in the way they help cells communicate to maintain homeostasis.

Multiple Choice

Which two body systems are primarily responsible for cell-to-cell communication in humans?

• Nervous system and endocrine system

• Digestive system and respiratory system

• Muscular system and skeletal system

• Circulatory system and lymphatic system

Open Ended

Explain why harmful substances like viruses and bacteria may still enter a cell even though the membrane is selectively permeable.

Multiple Choice

What property allows only small molecules to pass through the cell membrane by diffusion?

• Their small size

• Their electrical charge

• Their color

• Their temperature

Multiple Select

Which of the following molecules can easily diffuse through the cell membrane?

• Water

• Carbon dioxide

• Oxygen

• Protein

Open Ended

Explain why large organic molecules cannot easily pass through the cell membrane and how digestion helps in their absorption.

Multiple Choice

Which of the following molecules must be digested into smaller building blocks before they can pass through the cell membrane?

• Glucose

• Amino acids

• Starch

• Fatty acids

Open Ended

How does the selectively permeable cell membrane aid in the maintenance of homeostasis?

Multiple Choice

Which of the following molecules are able to easily pass through a selectively permeable membrane?

• Starch

• Glucose

• Proteins

• Lipids

Multiple Choice

Which type of cellular transport requires energy in the form of ATP?

• Diffusion

• Facilitated diffusion

• Active transport

• Passive transport

Open Ended

The above image represents a real life example of diffusion. Can you think of any other examples?

Multiple Choice

Will Oxygen move INTO or OUT of the cell?

• INTO the cell

• OUT of the cell

• It will not move

• It will move both ways equally

Open Ended

What is the concentration gradient for Oxygen?

Open Ended

What is the concentration gradient for molecule 1?

Multiple Choice

Which of the following statements best describes facilitated diffusion?

• Movement of molecules from high to low concentration using a protein channel, without ATP

• Movement of molecules from low to high concentration using a protein channel, with ATP

• Movement of molecules from high to low concentration without a protein channel, using ATP

• Movement of molecules from low to high concentration without a protein channel, without ATP

Multiple Choice

In what ways is the cell membrane similar to a fortress?

• It allows all substances to enter freely

• It protects the cell by separating environments and controlling entry

• It produces energy for the cell

• It stores genetic information