WorksheetsMCQs on Plasma Membrane
Total questions: 10
Worksheet time: 10mins
The plasma membrane is primarily composed of:
Proteins and carbohydrates
Lipids and proteins
DNA and proteins
Nucleotides and carbohydrates
The lipid bilayer of the plasma membrane is formed by:
Cholesterol molecules
Phospholipids
Glycolipids
Proteins
Which part of a phospholipid is hydrophilic?
Fatty acid tail
Glycerol backbone
Phosphate head
Entire molecule
What is the role of cholesterol in the plasma membrane?
Provides energy
Increases fluidity and stability
Forms a channel for ion transport
Produces ATP
The plasma membrane is selectively permeable, meaning it:
Allows all substances to pass through
Blocks all substances from passing through
Regulates the movement of substances into and out of the cell
Is impermeable to water
The primary function of membrane proteins is to:
Store genetic material
Transport molecules and act as receptors
Produce energy
Break down waste
Which of the following is a function of glycoproteins in the plasma membrane?
Structural support
Cell recognition and signaling
Transport of ions
Lipid synthesis
Diffusion across the plasma membrane requires:
Energy from ATP
Membrane proteins but no energy
Endocytosis
None of these
Which type of transport requires energy?
Simple diffusion
Facilitated diffusion
Active transport
Osmosis
Endocytosis is a process where the plasma membrane:
Pumps ions across the membrane
Engulfs substances into vesicles
Expels waste materials
Transports oxygen directly
