Cell Membrane Structure and Function

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the cell membrane?

  • Forms a stable barrier between two acqueous compartments
  • Assists in the transfer of molecules across the membrane
  • Regulates the entry and exit of the cell (correct)
  • Supports the cell and helps in maintaining its shape

Where is the cell membrane located in an animal cell?

  • Outer most layer (correct)
  • Innermost layer
  • Around the nucleus
  • Between the cytoplasm and nucleus

What role does the cytoskeleton play in relation to the cell membrane?

  • Supports the cell and helps in maintaining its shape
  • Acts as a base of attachment for the cytoskeleton (correct)
  • Forms a stable barrier between two acqueous compartments
  • Assists in the transfer of molecules across the membrane

What is the composition of the cell membrane?

<p>Composed of two layers of phospholipids and embedded with proteins (C)</p> Signup and view all the answers

What does it mean for the cell membrane to be semi-permeable?

<p>Allows only selected molecules to diffuse across the membrane (D)</p> Signup and view all the answers

What is the role of the cell membrane in protecting the interior of the cell?

<p>Regulates what enters and exits the cell (C)</p> Signup and view all the answers

What is the primary function of the cell membrane?

<p>To regulate the entry and exit of substances (D)</p> Signup and view all the answers

Which statement best describes the composition of the cell membrane?

<p>Composed of two layers of phospholipids and embedded with proteins (B)</p> Signup and view all the answers

What role does the cytoskeleton play in relation to the cell membrane?

<p>It provides a base of attachment for the cell membrane in some organisms (C)</p> Signup and view all the answers

What does it mean for the cell membrane to be semi-permeable?

<p>It permits only selected molecules to diffuse across the membrane (B)</p> Signup and view all the answers

Where is the cell membrane located in an animal cell?

<p>In the outermost layer (D)</p> Signup and view all the answers

What is the role of the cell membrane in protecting the interior of the cell?

<p>To allow only selected substances into the cell and keep unwanted substances out (D)</p> Signup and view all the answers

How does the cell membrane support the cell's structural integrity?

<p>By providing a stable barrier between two aqueous compartments (C)</p> Signup and view all the answers

What are some components responsible for giving membranes their flexibility?

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

What is the primary function of the proteins embedded in the cell membrane?

<p>To regulate the entry and exit of the cell (A)</p> Signup and view all the answers

Which characteristic best describes the structure of the cell membrane?

<p>Double layer of phospholipids with numerous embedded proteins (B)</p> Signup and view all the answers

What would happen if the cell membrane lost its semi-permeable nature?

<p>The cell would not be able to regulate water balance (B)</p> Signup and view all the answers

What role does the stable barrier formed by the cell membrane play in cellular processes?

<p>It facilitates selective transport and compartmentalization of cellular components (B)</p> Signup and view all the answers

Which statement best explains the diverse functions of the proteins in the cell membrane?

<p>The proteins act as channels, receptors, and enzymes, contributing to various cellular processes (C)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser