Cell Membrane Transport Mechanisms Quiz
10 Questions
2 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 type of transport mechanism is responsible for deriving salt and sugar (followed by water) into the enterocytes?

  • Passive transport
  • Facilitated diffusion
  • Active transport (correct)
  • Osmosis

    • Which of the following is a characteristic of the cell membrane?

  • Semi-permeable, allowing passage of lipid-soluble substances and preventing passage of water and water-soluble ones (correct)
  • Impermeable, preventing the passage of all substances
  • Fully permeable, allowing passage of all substances equally
  • Permeable to water and water-soluble substances only

    • In the context of cell membranes, what do proteins (integral or peripheral) act as?

  • Structural components only
  • Waste disposal units for the cell
  • Energy sources for the cell
  • Channels, carriers, pumps, enzymes, receptors (correct)

    • What causes a five-year-old child, known case of lactose intolerance, to develop diarrhea whenever he drinks milk?

    <p>Inability to digest lactose due to deficiency of the enzyme lactase</p> Signup and view all the answers

    Which type of transport mechanism moves molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy?

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

    Which transport mechanism requires energy?

    <p>Facilitated diffusion</p> Signup and view all the answers

    What is the primary difference between simple diffusion and facilitated diffusion?

    <p>Protein carriers are needed in facilitated diffusion but not in simple diffusion</p> Signup and view all the answers

    In which type of transport does a substance move against its chemical or electrical gradient, with consumption of energy and usage of a carrier?

    <p>Primary active transport</p> Signup and view all the answers

    What is the role of exocytosis in cell function?

    <p>For the secretion of proteins synthesized within the cell</p> Signup and view all the answers

    What is the driving force for secondary active transport?

    <p>Another (driving) substance that is transported down its gradient</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser