placeholder image to represent content

Plasma membrane and transport across the membrane

Quiz by Horia

Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

New Quizalize solo game modes
54 questions
Show answers
  • Q1
    What does the plasma membrane do?
    Separate membrane bound areas in a cell are formed and separated by membranes to allow different parts of the cell to have specific conditions for cellular reactions
    It separates the cell from its external environment
    30s
  • Q2
    What is compartmentalisation and what is it for?
    Separate membrane bound areas in a cell are formed and separated by membranes to allow different parts of the cell to have specific conditions for cellular reactions
    The separating of the cell from its external environment
    30s
  • Q3
    What are membranes made up of?
    A phospholipid bilayer
    A triglyceride bilayer
    30s
  • Q4
    What does the term hydrophobic mean?
    Water hating
    Water loving
    30s
  • Q5
    Describe the structure of the phospholipid bilayer.
    Hydrophilic phosphate heads form the inner and outer surface of a membrane, sandwiching the fatty acid tails of the phospholipids to form a hydrophobic core inside the membrane. Hydrophobic tails point inwards to form the hydrophobic core.
    Hydrophobic phosphate heads form the inner and outer surface of a membrane, sandwiching the fatty acid tails of the phospholipids to form a hydrophilic core inside the membrane.
    30s
  • Q6
    What does the term hydrophilic mean?
    Water loving
    Water hating
    30s
  • Q7
    Why are the phosphate heads on the inner and outer surface of the membrane?
    The internal and external environment of the cell is lipid soluble. The phosphate heads interact well with lipids and so they form the inner and outer surface of the membrane.
    The internal and external environment of the cell is aqueous. The phosphate heads interact well with water and so they form the inner and outer surface of the membrane.
    30s
  • Q8
    What does the mosaic part of the fluid mosaic model mean?
    The phospholipids are free to move within the layer relative to each other giving the membrane flexibility.
    Proteins are embedded in the bilayer vary in shape, size and position.
    30s
  • Q9
    What does the fluid part of the fluid mosaic model mean?
    The phospholipids are free to move within the layer relative to each other giving the membrane flexibility.
    Proteins are embedded in the bilayer vary in shape, size and position.
    30s
  • Q10
    What is an intrinsic protein?
    A protein which spans the entire bilayer
    A protein lying present only on one side of the bilayer
    30s
  • Q11
    What is an extrinsic protein?
    A protein which spans the entire bilayer
    A protein lying present only on one side of the bilayer
    30s
  • Q12
    What is a glycolipid?
    phospholipids are attached to carbohydrates which in turn are bonded to a protein
    phospholipids are attached to carbohydrates which in turn are bonded to a lipid
    30s
  • Q13
    What is a glycoprotein?
    phospholipids are attached to carbohydrates which in turn are bonded to a lipid
    phospholipids are attached to carbohydrates which in turn are bonded to a protein
    30s
  • Q14
    Which type of substances pass freely through the phospholipid bilayer?
    Large polar molecules
    Large molecules
    Polar molecules
    Small non polar or lipid soluble molecules
    30s
  • Q15
    What are carrier proteins?
    Take part in passive and active transport. The shape of the protein changes for this.
    A hydrophilic channel that allows passive movement of polar molecules and ions down their concentration gradient through membranes. Outside of the protein have hydrophobic R-groups to interact with the hydrophobic core of the membrane.
    30s

Teachers give this quiz to your class