Cell Membrane Quiz

What is the primary function of the cell membrane?

• To produce energy for the cell

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

• To store genetic information

• To synthesize proteins

Tags

NGSS.MS-LS1-2

What does selective permeability mean?

• The ability to allow all substances to pass through

• The ability to allow only certain substances to pass through

• The ability to block all substances from passing through

• The ability to change shape

Which two organic compounds primarily make up the cell membrane?

• Proteins and carbohydrates

• Lipids and proteins

• Nucleic acids and lipids

• Carbohydrates and nucleic acids

Which of the following substances is typically allowed to pass through the cell membrane?

• Large proteins

• Ions

• DNA

• Starch

What does it mean for a plasma membrane to be selectively permeable?

• It allows all molecules to enter and exit the cell freely.

• It allows some molecules to enter the cell while keeping others out.

• It prevents all molecules from entering the cell.

• It allows only water molecules to pass through.

Which of the following materials is allowed to move through the cell membrane?

• Proteins

• Water

• Starch

• Lipids

Why are materials like water and oxygen permitted to move through the cell membrane?

• They are large molecules

• They are charged particles

• They are small and nonpolar

• They require energy to move

What is the structure of the phospholipid bilayer in the cell membrane?

• Three layers of phospholipids

• Two layers of phospholipids back to back

• A single layer of phospholipids

• Four layers of phospholipids

Tags

NGSS.MS-LS1-2

Which of the following is a component of phospholipids in the plasma membrane?

• A glycerol backbone

• A glucose backbone

• A protein backbone

• A nucleic acid backbone

How many fatty acid chains are present in a phospholipid?

• 1 fatty acid chain

• 2 fatty acid chains

• 3 fatty acid chains

• 4 fatty acid chains