Cell Membrane Structure and Components Quiz
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Questions and Answers

What is the function of the cell membrane?

  • Coordinates cell division
  • Stores excess water within the cell
  • Breaks down substances for energy production
  • Protects, identifies, regulates substance passage, communicates, and anchors cytoskeleton (correct)

Which structure improves stability and reduces fluidity in animal cell membranes?

  • Carbohydrates
  • Cholesterol (correct)
  • Phospholipids
  • Proteins

Which process involves the movement of macromolecules through vesicles?

  • Osmosis
  • Exocytosis
  • Facilitated diffusion
  • Endocytosis (correct)

What is the movement of particles from higher to lower concentration called?

<p>Diffusion (B)</p> Signup and view all the answers

Which structure forms a bilayer with polar heads outward and nonpolar tails inward?

<p>Phospholipids (B)</p> Signup and view all the answers

What type of transport is energy-demanding and transfers substances from lower to higher concentration?

<p>Active transport (D)</p> Signup and view all the answers

What are the finger-like extensions on the cell membrane referred to as?

<p>Microvilli (A)</p> Signup and view all the answers

What is the process of vesicles releasing contents to the outside called?

<p>Exocytosis (B)</p> Signup and view all the answers

What type of molecules do vesicles engulf in pinocytosis?

<p>Small particles (D)</p> Signup and view all the answers

Which process involves the movement of solid particles through vesicles?

<p>Phagocytosis (B)</p> Signup and view all the answers

What type of molecules do vesicles engulf in phagocytosis?

<p>Solid particles (A)</p> Signup and view all the answers

Which type of transport assists in the movement of macromolecules through vesicles?

<p>Active transport (B)</p> Signup and view all the answers

What is the net movement of particles from higher to lower concentration called?

<p>Diffusion (A)</p> Signup and view all the answers

What are the finger-like extensions on the cell membrane referred to as?

<p>Microvilli (A)</p> Signup and view all the answers

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