Cell Membrane Structure and Functions
12 Questions
1 Views

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 classification of membrane proteins?

  • Integral and peripheral proteins (correct)
  • Channel and carrier proteins
  • Glycoproteins and glycolipids
  • Receptor and transporter proteins

What is the primary function of endocytosis?

  • To transport small molecules across the membrane
  • To synthesize proteins in the cell
  • To uptake large particles or fluid from the extracellular medium (correct)
  • To release macromolecules to the exterior

What is the term for the ingestion of large particles such as viruses, bacteria, cells, or debris?

  • Phagocytosis (correct)
  • Exocytosis
  • Pinocytosis
  • Receptor-mediated endocytosis

What is the term for the release of macromolecules to the exterior of the cell?

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

What is an example of receptor-mediated endocytosis?

<p>Uptake of LDL molecule and its receptor (A)</p> Signup and view all the answers

What are the two types of membrane carbohydrates?

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

What is the primary function of the cell membrane?

<p>Separating the cytoplasm from its extracellular environment (D)</p> Signup and view all the answers

Which of the following lipid components is prominent in myelin sheaths?

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

What is the function of the hydroxyl group of cholesterol in the cell membrane?

<p>It faces the aqueous interface and restricts the movement of the phospholipid fatty acids (A)</p> Signup and view all the answers

What is the term used to describe the property of membrane lipids that have both hydrophobic and hydrophilic regions?

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

What is the function of the carbohydrate component of the cell membrane?

<p>It is involved in cell signaling and recognition (D)</p> Signup and view all the answers

What is the primary component of the cell membrane that contributes to its selective permeability?

<p>Channels and pumps (C)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser